Enhancement of dye solar cell by adding n ps
•Download as PPTX, PDF•
0 likes•52 views
This document discusses the fabrication and testing of dye-sensitized solar cells (DSSCs) with and without gold nanoparticles (AuNPs). It first provides background on DSSC technology and generations of solar cells. It then describes the experimental methods for fabricating DSSCs using titanium dioxide and AuNPs deposited by laser ablation. Testing shows the DSSCs with AuNPs have higher efficiency, with improved absorption, short-circuit current density, incident photon conversion efficiency, and responsivity compared to cells without AuNPs. In conclusion, the AuNPs enhance absorption and efficiency due to their strong surface plasmon resonance effect. Future work proposed includes using different metal nanoparticles and fabrication methods.
Report
Share
Report
Share
Recommended
04 grigorieva kvant jct
Bifacial Si solar cells for space applications fabricated using combined ion implantation � thermal diffusion technology
14 burgers ecn
This document discusses bifacial solar cells and some of the challenges in optimizing their performance. Key points include:
1) Bifacial n-type "Panda" cells show potential for high rear-side efficiency but are not yet optimized for bifacial performance.
2) Bifacial cells have a wider efficiency distribution on the rear side than the front, impacting cell selection and module performance.
3) Parameters like bulk lifetime, resistivity, and surface passivation influence rear-side IQE and current collection, which can vary more than on the front side.
4) At high resistivity and efficiency, bifacial cells may have slower response times that require
13 edler isc konstanz
- The document describes an add-on setup for making bifacial PV cell measurements in a Berger flasher system using two mirrors to direct light to the rear side of the cell.
- Key characteristics of the setup are that it provides front and rear illumination at up to 1.5 suns intensity levels, maintains constant cell temperature, and uses a reference cell to correct for intensity fluctuations.
- Initial measurements showed the setup could fulfill IEC flasher measurement criteria except for spatial homogeneity, and was suitable for investigating differences between bifacial cell designs.
07 sitnikov 3 d_solar_solarwind
This document discusses bifacial solar cells and modules. It provides the following key points:
- Bifacial solar modules can provide a power gain of 7-9% compared to standard modules, or up to 30% when used with a special tracking system.
- A test of bifacial modules on a TRAXEL system in the Czech Republic showed a significant advantage over standard modules of similar capacity.
- Multi-crystalline silicon is suitable for bifacial applications despite lower minority carrier lifetimes. Measurements of diffusion lengths on multi-crystalline bifacial cells showed lengths over 300 microns.
- The "light trapping" effect can impact short circuit current
08 lill ipv stuttgart
This document discusses laser processes that can be used to improve bifacial solar cells. It describes how selective laser doping can be used to dope emitter regions and bulk silicon to improve contacts and reduce shadowing on both sides of the solar cell. Laser transferred contacts are also discussed as a way to create fine line metallization patterns with reduced shadowing and contact resistance. Experimental results show that these laser processes can increase cell efficiency compared to standard diffusion processes. The laser techniques allow high selectivity and resolution and are well-suited for bifacial solar cell fabrication.
03 grunow pi berlin
This document summarizes the promises and challenges of bifacial solar modules. Bifacial modules can increase energy yields by over 20% compared to standard monofacial modules by capturing light on both the front and back surfaces. However, bifacial modules also face challenges such as higher operating temperatures, increased risk of hot spots, and higher ribbon losses due to increased current. Simulation tools can estimate bifacial yields but tend to underestimate temperatures, and standard albedo values may still be effective for bifacial modules. Glass-glass module designs provide a cost-effective alternative to transparent backsheets for bifacial modules.
10 sinton sinton instruments
This document discusses characterization issues for bifacial solar cells. It notes that bifacial cells have complex current-voltage curves due to two-dimensional effects and injection-dependent properties. Accurately measuring these cells is challenging as they have ambiguous voltages prior to interconnection and high capacitance for high-efficiency designs. The document recommends avoiding ideal diode models, minimizing metal shadowing on the backside, controlling measurements to determine critical parameters, and using an engineered approach focused on module performance rather than naked cell measurements.
11 ebinger fh g ise
This document discusses characterizing bifacial solar cells and achieving inter-laboratory comparability of results. It proposes using a black reference chuck with 0% reflectance as the standard, as it is easy to define and realize, and improves comparability between labs. A simple model is presented to estimate the impact of bifaciality based on a cell's spectral response and the chuck's reflectance properties. Experimental tests show good agreement with the model for some surfaces but higher currents for surfaces like anodized aluminum that reflect light more diffusely. Defining a reference standard is important for accurately comparing bifacial cell efficiencies between laboratories.
Recommended
04 grigorieva kvant jct
Bifacial Si solar cells for space applications fabricated using combined ion implantation � thermal diffusion technology
14 burgers ecn
This document discusses bifacial solar cells and some of the challenges in optimizing their performance. Key points include:
1) Bifacial n-type "Panda" cells show potential for high rear-side efficiency but are not yet optimized for bifacial performance.
2) Bifacial cells have a wider efficiency distribution on the rear side than the front, impacting cell selection and module performance.
3) Parameters like bulk lifetime, resistivity, and surface passivation influence rear-side IQE and current collection, which can vary more than on the front side.
4) At high resistivity and efficiency, bifacial cells may have slower response times that require
13 edler isc konstanz
- The document describes an add-on setup for making bifacial PV cell measurements in a Berger flasher system using two mirrors to direct light to the rear side of the cell.
- Key characteristics of the setup are that it provides front and rear illumination at up to 1.5 suns intensity levels, maintains constant cell temperature, and uses a reference cell to correct for intensity fluctuations.
- Initial measurements showed the setup could fulfill IEC flasher measurement criteria except for spatial homogeneity, and was suitable for investigating differences between bifacial cell designs.
07 sitnikov 3 d_solar_solarwind
This document discusses bifacial solar cells and modules. It provides the following key points:
- Bifacial solar modules can provide a power gain of 7-9% compared to standard modules, or up to 30% when used with a special tracking system.
- A test of bifacial modules on a TRAXEL system in the Czech Republic showed a significant advantage over standard modules of similar capacity.
- Multi-crystalline silicon is suitable for bifacial applications despite lower minority carrier lifetimes. Measurements of diffusion lengths on multi-crystalline bifacial cells showed lengths over 300 microns.
- The "light trapping" effect can impact short circuit current
08 lill ipv stuttgart
This document discusses laser processes that can be used to improve bifacial solar cells. It describes how selective laser doping can be used to dope emitter regions and bulk silicon to improve contacts and reduce shadowing on both sides of the solar cell. Laser transferred contacts are also discussed as a way to create fine line metallization patterns with reduced shadowing and contact resistance. Experimental results show that these laser processes can increase cell efficiency compared to standard diffusion processes. The laser techniques allow high selectivity and resolution and are well-suited for bifacial solar cell fabrication.
03 grunow pi berlin
This document summarizes the promises and challenges of bifacial solar modules. Bifacial modules can increase energy yields by over 20% compared to standard monofacial modules by capturing light on both the front and back surfaces. However, bifacial modules also face challenges such as higher operating temperatures, increased risk of hot spots, and higher ribbon losses due to increased current. Simulation tools can estimate bifacial yields but tend to underestimate temperatures, and standard albedo values may still be effective for bifacial modules. Glass-glass module designs provide a cost-effective alternative to transparent backsheets for bifacial modules.
10 sinton sinton instruments
This document discusses characterization issues for bifacial solar cells. It notes that bifacial cells have complex current-voltage curves due to two-dimensional effects and injection-dependent properties. Accurately measuring these cells is challenging as they have ambiguous voltages prior to interconnection and high capacitance for high-efficiency designs. The document recommends avoiding ideal diode models, minimizing metal shadowing on the backside, controlling measurements to determine critical parameters, and using an engineered approach focused on module performance rather than naked cell measurements.
11 ebinger fh g ise
This document discusses characterizing bifacial solar cells and achieving inter-laboratory comparability of results. It proposes using a black reference chuck with 0% reflectance as the standard, as it is easy to define and realize, and improves comparability between labs. A simple model is presented to estimate the impact of bifaciality based on a cell's spectral response and the chuck's reflectance properties. Experimental tests show good agreement with the model for some surfaces but higher currents for surfaces like anodized aluminum that reflect light more diffusely. Defining a reference standard is important for accurately comparing bifacial cell efficiencies between laboratories.
05 mihailetchi isc konstanz
- The document discusses bifacial n-type crystalline silicon solar cells, including motivation for bifacial cells, installation possibilities, cell fabrication methods, and preliminary module test results. It achieves up to 21% conversion efficiency on back-contacted IBC cells and 19.4% on standard front-contacted cells, both of which show good bifacial performance. Outdoor tests of small modules demonstrate at least a 12% gain in daily power production for slanted installations compared to monofacial modules.
09 ishikawa pvgs
The document discusses the development and industrial production of high efficiency bifacial solar cells by PVGS. Key points include:
1) PVGS has developed a bifacial solar cell called "EarthON" that achieves over 19.5% efficiency on the front and over 19% on the rear, with a bifaciality ratio over 95%.
2) PVGS operates a unique 35MW factory dedicated to bifacial cell production, which began operation in July 2011 and is achieving high production yields with average efficiencies exceeding 19.2%.
3) Testing shows the bifacial module design achieves a 14.5% higher power output compared to standard monofacial modules due to
12 mihailetchi ok
ZEBRA is an IBC bifacial solar cell technology developed by ISC Konstanz. Indoor measurements show the ZEBRA cell achieves a higher efficiency of 21.0% compared to 20.3% for the BiSoN n-PERT cell under front illumination. However, the BiSoN cell has a higher bifaciality ratio of 87.5% versus 75.0% for the ZEBRA cell. Outdoor module testing found the BiSoN module provided a 19.8% yield gain compared to 15.1% for the ZEBRA module, demonstrating the ZEBRA technology can enable bifacial performance despite having a lower bifaciality ratio.
07 veschetti ines
This document summarizes several bifacial solar cell technologies:
1) Heterojunction solar cells show similar efficiency potential for bifacial (20%) and non-bifacial configurations but rear efficiency is lower (17%) due to reflectivity limitations.
2) N-type PERT cells initially showed lower rear efficiency (16%) but modifying the process to use a lighter rear doping achieved 92% of front efficiency (18%).
3) Ion implantation and co-diffusion processes simplify PERT cell fabrication and could achieve the highest efficiency (19.5%) at lowest cost through fewer steps.
04 eisenberg b solar
This document presents the results of experiments characterizing bifacial solar modules. Bifacial modules were able to generate additional energy from their back sides by collecting light reflected from the ground or other surfaces below. Testing was conducted at outdoor test fields in Jerusalem and Geilenkirchen, Germany on bifacial and standard monofacial modules over time periods ranging from days to months. The energy gain provided by bifacial modules depended on factors like diffuse to global radiation ratio, sun position, albedo of the underlying surface, and module elevation and spacing. Annual energy gains over 23% were typical for bifacial modules in field tests in Germany.
Metallization techniques for high efficiency solar cells
The document discusses several metallization techniques for improving the efficiency of high efficiency solar cells, including:
1) Advanced screen printing techniques that can reduce line widths and increase short circuit current.
2) Two-layer metallization approaches using a seed layer and light-induced plating to thicken the contact layer and improve aspect ratios.
3) Emerging techniques like pad printing, metal aerosol jetting, and laser sintering of metal powders that can print even narrower line widths compared to screen printing.
Lecture 10: Solar Cell Technologies
The document discusses various solar cell technologies, including their world record efficiencies. It covers traditional silicon technologies, as well as thin-film technologies like CIGS and CdTe. Emerging technologies discussed include perovskites, dyes, organics, and multi-junction cells. For each technology, it provides the strengths and weaknesses, example efficiency levels, and sometimes a diagram. It aims to give an overview of both established and new concepts in photovoltaics.
Extreme Ultraviolet Litography (EUVL): novel patterning materials, progress a...
Extreme Ultraviolet Litography (EUVL): novel patterning materials, progress a...Sociedade Brasileira de Pesquisa em Materiais
The document discusses progress in extreme ultraviolet lithography (EUVL) for semiconductor fabrication. It covers:
1) EUVL is a promising next-generation lithography technique needed to continue transistor scaling below 7nm, but faces challenges like resolution, line width roughness, and sensitivity.
2) Novel resist materials without chemical amplification are being developed to overcome issues with chemically amplified resists at small scales. Examples discussed are sulfonium-containing polymers that change solubility upon EUV exposure.
3) Experiments show these new resists can resolve lines as small as 16nm and complex nanostructures when exposed with EUV lithography. Continued improvements aim to enhance sensitivity.Rapid optimisation techniques
Rapid optimisation techniques for thin-film materials and devices
Talk presented to Functional Thin Films Symposium, 16th Oct, Coventry, UK.
Extream ultra violet
Extreme ultraviolet lithography (EUVL) is an advanced lithography technique that uses 13.5nm wavelength light to create microprocessors. EUVL allows for smaller transistor sizes by using a shorter wavelength light compared to traditional lithography techniques. EUVL faces challenges including light sources that require hot plasma to generate 13.5nm photons and reflective optics and masks that are required since materials absorb the short wavelength light. Successful implementation of EUVL could enable future microprocessors to operate at very high speeds with small sizes by continuing the scaling predicted by Moore's Law.
14 f. madon ok
1) Apollon Solar presented its New Industrial Cell Encapsulation (NICE) module technology and its application to bifacial modules.
2) Initial results were shown for NICE bifacial modules constructed with ISC Konstanz's bifacial solar cells, achieving up to 15% higher power output when illuminated from both sides compared to front-side only.
3) Challenges for NICE bifacial modules included junction box design to avoid rear shading and glass selection to optimize light transmission, with solutions demonstrated such as an edge junction box design and testing modules with anti-reflective coatings on both glass surfaces.
08 lossen bosch solar energy
This document summarizes an evaluation of bifacial n-type solar cells in outdoor conditions with varying mounting configurations. Key findings include:
1) Bifacial cells showed increased energy yield compared to monofacial references, with gains of up to 31% higher normalized yield for certain configurations.
2) Mounting the bifacial cells on the upper rack or with a white foil below showed the largest gains, likely due to increased light reflection.
3) Bifacial advantages were also observed on cloudy and overcast days, with higher albedo conditions leading to increased bifacial performance gains.
09 stewart prism solar
Randy Stewart, CEO of Prism Solar Technologies, discusses enhanced bifacial solar modules for next generation applications. Prism Solar creates modules with holograms that aid in sunlight harvesting for increased efficiency. Their T-120 product line uses holograms optimized for different mounting structures and angles of incidence to maximize energy capture. New opportunities in smaller building-integrated arrays require additional design considerations like structural integrity, electrical connections, and harnessing light reflected from neighboring surfaces. Prism Solar performs testing to demonstrate the improved yearly performance of their hologram-enhanced bifacial modules over conventional designs.
10 discussion
The document discusses the need for a new standard measurement method for bifacial solar cells and modules, as bifacial technology provides more power from both sides of the panel, especially in the morning, afternoon, and winter. It poses questions about making the advantages of bifacial modules clear to buyers, calculating the additional costs of bifacial technology, and what is needed to significantly grow the bifacial PV market to tens of gigawatts. Improving module layout is also discussed, such as optimizing cells for bifacial use and testing to guarantee the lifetime of bifacial modules.
10 naftali eisenberg ok
1) bSolar has developed an industrial process for manufacturing bifacial solar cells using standard p-type silicon fabrication.
2) Their bifacial PERC cell achieves 18.4% front-side efficiency on average in industrial production, with a bifaciality factor of 75%, and they expect to reach 19.6% efficiency.
3) Field tests of bSolar bifacial modules show annual energy gains of 22-23% compared to monofacial modules, demonstrating the effectiveness of capturing light reflected onto the back side.
PV Module Light Soaking Literature Review
The document summarizes light soaking effects on various photovoltaic module technologies, including amorphous silicon, cadmium telluride, and copper indium gallium selenide. It reviews literature on the physical mechanisms behind light-induced changes in each material and discusses long-term light-induced degradation. Reversible effects and irreversible degradation are described. The document is intended to provide an overview and promote discussion on preconditioning modules to accurately determine power output.
Flexible CIGS PV: Past, Present, and Future
Flexible CIGS solar technology allows for lightweight, flexible solar modules that overcome limitations of traditional rigid glass modules. Ascent Solar produces flexible CIGS modules using a roll-to-roll manufacturing process and monolithic integration techniques. This allows their modules to be highly efficient, lightweight and flexible, making them well-suited for applications such as consumer products, transportation, defense, and building integration. Their technology and products target significant market opportunities in areas like portable electronics charging, electric vehicles, and building-integrated photovoltaics.
PV Module UV Exposure Literature Review
This document summarizes a literature review on the effects of UV exposure on PV modules. Some key findings include:
- UV exposure can cause browning and degradation of EVA encapsulants, reducing adhesion and optical transmission over time. Silicone encapsulants demonstrate better UV stability.
- UV exposure is shown to decrease the short circuit current (Isc) of intrinsic c-Si solar cells over time, with degradation rates dependent on cell/module materials and design.
- Artificial light sources like xenon arc lamps and fluorescent bulbs are commonly used to simulate outdoor UV exposure for accelerated testing, but may not accurately mimic the full solar spectrum. Spectral measurements of UV sources can also vary significantly between
MICROCRACKS IN PV MODULE ppt
Microcracks in photovoltaic modules were studied to understand their effect on power output. Various crack detection techniques were examined including optical transmission, infrared ultrasound lock-in thermography, and electroluminescence imaging. Cracks were classified based on orientation and effects. While small cracks may not impact power initially, as cracks grow and become Mode B or C, power loss increases due to reduced active cell area. The conclusion is that silicon wafer cracks can cause up to 2.5% power loss if electrical connection is maintained, and modules can tolerate up to 8% loss of cell active area before impacting output.
Extreme uv lithography
Extreme UV (EUV) lithography uses light with a wavelength of 13.5nm to enable the next generation of smaller computer chips. It relies on specialized curved mirrors coated with molybdenum and silicon instead of lenses, since materials absorb EUV light. The only viable source of 13.5nm light is a hot plasma created by firing a powerful laser at a target. EUV lithography requires operating in a vacuum and developing new resist materials since existing ones strongly absorb the short wavelength light. It holds the potential to further advance computer processing power through smaller transistor sizes.
Thin-Film Photovoltaics R&D: Innovation, Opportunities_Ennaoui
This document discusses thin-film photovoltaics research and opportunities. It covers several topics:
- Thin-film solar cell technologies like CIGS, CdTe, and emerging materials like CZTS have higher efficiencies than earlier generations and lower production costs. Research aims to further improve efficiency and reduce costs.
- The Helmholtz-Zentrum in Berlin conducts R&D on thin-film photovoltaics including advanced materials, device concepts, and characterization techniques to develop more efficient and cost-effective solar cells.
- Issues like material scarcity for some thin-film technologies are being addressed through research into alternative materials and processes to produce solar cells on flexible substrates using less raw
EAMTA keynote 2014
This document summarizes a simulation approach to modeling quantum dot solar cells. It describes how quantum dots can enable intermediate band solar cells with efficiencies over 60% by absorbing low-energy photons. The modeling approach uses drift-diffusion equations coupled with rate equations to model carrier transport and capture/escape processes in the quantum dots. Simulation results are presented and show good agreement with experimental measurements, demonstrating how factors like quantum dot density and doping affect cell performance. Non-linear behavior is also examined and attributed to carrier dynamics in the quantum dots.
More Related Content
What's hot
05 mihailetchi isc konstanz
- The document discusses bifacial n-type crystalline silicon solar cells, including motivation for bifacial cells, installation possibilities, cell fabrication methods, and preliminary module test results. It achieves up to 21% conversion efficiency on back-contacted IBC cells and 19.4% on standard front-contacted cells, both of which show good bifacial performance. Outdoor tests of small modules demonstrate at least a 12% gain in daily power production for slanted installations compared to monofacial modules.
09 ishikawa pvgs
The document discusses the development and industrial production of high efficiency bifacial solar cells by PVGS. Key points include:
1) PVGS has developed a bifacial solar cell called "EarthON" that achieves over 19.5% efficiency on the front and over 19% on the rear, with a bifaciality ratio over 95%.
2) PVGS operates a unique 35MW factory dedicated to bifacial cell production, which began operation in July 2011 and is achieving high production yields with average efficiencies exceeding 19.2%.
3) Testing shows the bifacial module design achieves a 14.5% higher power output compared to standard monofacial modules due to
12 mihailetchi ok
ZEBRA is an IBC bifacial solar cell technology developed by ISC Konstanz. Indoor measurements show the ZEBRA cell achieves a higher efficiency of 21.0% compared to 20.3% for the BiSoN n-PERT cell under front illumination. However, the BiSoN cell has a higher bifaciality ratio of 87.5% versus 75.0% for the ZEBRA cell. Outdoor module testing found the BiSoN module provided a 19.8% yield gain compared to 15.1% for the ZEBRA module, demonstrating the ZEBRA technology can enable bifacial performance despite having a lower bifaciality ratio.
07 veschetti ines
This document summarizes several bifacial solar cell technologies:
1) Heterojunction solar cells show similar efficiency potential for bifacial (20%) and non-bifacial configurations but rear efficiency is lower (17%) due to reflectivity limitations.
2) N-type PERT cells initially showed lower rear efficiency (16%) but modifying the process to use a lighter rear doping achieved 92% of front efficiency (18%).
3) Ion implantation and co-diffusion processes simplify PERT cell fabrication and could achieve the highest efficiency (19.5%) at lowest cost through fewer steps.
04 eisenberg b solar
This document presents the results of experiments characterizing bifacial solar modules. Bifacial modules were able to generate additional energy from their back sides by collecting light reflected from the ground or other surfaces below. Testing was conducted at outdoor test fields in Jerusalem and Geilenkirchen, Germany on bifacial and standard monofacial modules over time periods ranging from days to months. The energy gain provided by bifacial modules depended on factors like diffuse to global radiation ratio, sun position, albedo of the underlying surface, and module elevation and spacing. Annual energy gains over 23% were typical for bifacial modules in field tests in Germany.
Metallization techniques for high efficiency solar cells
The document discusses several metallization techniques for improving the efficiency of high efficiency solar cells, including:
1) Advanced screen printing techniques that can reduce line widths and increase short circuit current.
2) Two-layer metallization approaches using a seed layer and light-induced plating to thicken the contact layer and improve aspect ratios.
3) Emerging techniques like pad printing, metal aerosol jetting, and laser sintering of metal powders that can print even narrower line widths compared to screen printing.
Lecture 10: Solar Cell Technologies
The document discusses various solar cell technologies, including their world record efficiencies. It covers traditional silicon technologies, as well as thin-film technologies like CIGS and CdTe. Emerging technologies discussed include perovskites, dyes, organics, and multi-junction cells. For each technology, it provides the strengths and weaknesses, example efficiency levels, and sometimes a diagram. It aims to give an overview of both established and new concepts in photovoltaics.
Extreme Ultraviolet Litography (EUVL): novel patterning materials, progress a...
Extreme Ultraviolet Litography (EUVL): novel patterning materials, progress a...Sociedade Brasileira de Pesquisa em Materiais
The document discusses progress in extreme ultraviolet lithography (EUVL) for semiconductor fabrication. It covers:
1) EUVL is a promising next-generation lithography technique needed to continue transistor scaling below 7nm, but faces challenges like resolution, line width roughness, and sensitivity.
2) Novel resist materials without chemical amplification are being developed to overcome issues with chemically amplified resists at small scales. Examples discussed are sulfonium-containing polymers that change solubility upon EUV exposure.
3) Experiments show these new resists can resolve lines as small as 16nm and complex nanostructures when exposed with EUV lithography. Continued improvements aim to enhance sensitivity.Rapid optimisation techniques
Rapid optimisation techniques for thin-film materials and devices
Talk presented to Functional Thin Films Symposium, 16th Oct, Coventry, UK.
Extream ultra violet
Extreme ultraviolet lithography (EUVL) is an advanced lithography technique that uses 13.5nm wavelength light to create microprocessors. EUVL allows for smaller transistor sizes by using a shorter wavelength light compared to traditional lithography techniques. EUVL faces challenges including light sources that require hot plasma to generate 13.5nm photons and reflective optics and masks that are required since materials absorb the short wavelength light. Successful implementation of EUVL could enable future microprocessors to operate at very high speeds with small sizes by continuing the scaling predicted by Moore's Law.
14 f. madon ok
1) Apollon Solar presented its New Industrial Cell Encapsulation (NICE) module technology and its application to bifacial modules.
2) Initial results were shown for NICE bifacial modules constructed with ISC Konstanz's bifacial solar cells, achieving up to 15% higher power output when illuminated from both sides compared to front-side only.
3) Challenges for NICE bifacial modules included junction box design to avoid rear shading and glass selection to optimize light transmission, with solutions demonstrated such as an edge junction box design and testing modules with anti-reflective coatings on both glass surfaces.
08 lossen bosch solar energy
This document summarizes an evaluation of bifacial n-type solar cells in outdoor conditions with varying mounting configurations. Key findings include:
1) Bifacial cells showed increased energy yield compared to monofacial references, with gains of up to 31% higher normalized yield for certain configurations.
2) Mounting the bifacial cells on the upper rack or with a white foil below showed the largest gains, likely due to increased light reflection.
3) Bifacial advantages were also observed on cloudy and overcast days, with higher albedo conditions leading to increased bifacial performance gains.
09 stewart prism solar
Randy Stewart, CEO of Prism Solar Technologies, discusses enhanced bifacial solar modules for next generation applications. Prism Solar creates modules with holograms that aid in sunlight harvesting for increased efficiency. Their T-120 product line uses holograms optimized for different mounting structures and angles of incidence to maximize energy capture. New opportunities in smaller building-integrated arrays require additional design considerations like structural integrity, electrical connections, and harnessing light reflected from neighboring surfaces. Prism Solar performs testing to demonstrate the improved yearly performance of their hologram-enhanced bifacial modules over conventional designs.
10 discussion
The document discusses the need for a new standard measurement method for bifacial solar cells and modules, as bifacial technology provides more power from both sides of the panel, especially in the morning, afternoon, and winter. It poses questions about making the advantages of bifacial modules clear to buyers, calculating the additional costs of bifacial technology, and what is needed to significantly grow the bifacial PV market to tens of gigawatts. Improving module layout is also discussed, such as optimizing cells for bifacial use and testing to guarantee the lifetime of bifacial modules.
10 naftali eisenberg ok
1) bSolar has developed an industrial process for manufacturing bifacial solar cells using standard p-type silicon fabrication.
2) Their bifacial PERC cell achieves 18.4% front-side efficiency on average in industrial production, with a bifaciality factor of 75%, and they expect to reach 19.6% efficiency.
3) Field tests of bSolar bifacial modules show annual energy gains of 22-23% compared to monofacial modules, demonstrating the effectiveness of capturing light reflected onto the back side.
PV Module Light Soaking Literature Review
The document summarizes light soaking effects on various photovoltaic module technologies, including amorphous silicon, cadmium telluride, and copper indium gallium selenide. It reviews literature on the physical mechanisms behind light-induced changes in each material and discusses long-term light-induced degradation. Reversible effects and irreversible degradation are described. The document is intended to provide an overview and promote discussion on preconditioning modules to accurately determine power output.
Flexible CIGS PV: Past, Present, and Future
Flexible CIGS solar technology allows for lightweight, flexible solar modules that overcome limitations of traditional rigid glass modules. Ascent Solar produces flexible CIGS modules using a roll-to-roll manufacturing process and monolithic integration techniques. This allows their modules to be highly efficient, lightweight and flexible, making them well-suited for applications such as consumer products, transportation, defense, and building integration. Their technology and products target significant market opportunities in areas like portable electronics charging, electric vehicles, and building-integrated photovoltaics.
PV Module UV Exposure Literature Review
This document summarizes a literature review on the effects of UV exposure on PV modules. Some key findings include:
- UV exposure can cause browning and degradation of EVA encapsulants, reducing adhesion and optical transmission over time. Silicone encapsulants demonstrate better UV stability.
- UV exposure is shown to decrease the short circuit current (Isc) of intrinsic c-Si solar cells over time, with degradation rates dependent on cell/module materials and design.
- Artificial light sources like xenon arc lamps and fluorescent bulbs are commonly used to simulate outdoor UV exposure for accelerated testing, but may not accurately mimic the full solar spectrum. Spectral measurements of UV sources can also vary significantly between
MICROCRACKS IN PV MODULE ppt
Microcracks in photovoltaic modules were studied to understand their effect on power output. Various crack detection techniques were examined including optical transmission, infrared ultrasound lock-in thermography, and electroluminescence imaging. Cracks were classified based on orientation and effects. While small cracks may not impact power initially, as cracks grow and become Mode B or C, power loss increases due to reduced active cell area. The conclusion is that silicon wafer cracks can cause up to 2.5% power loss if electrical connection is maintained, and modules can tolerate up to 8% loss of cell active area before impacting output.
Extreme uv lithography
Extreme UV (EUV) lithography uses light with a wavelength of 13.5nm to enable the next generation of smaller computer chips. It relies on specialized curved mirrors coated with molybdenum and silicon instead of lenses, since materials absorb EUV light. The only viable source of 13.5nm light is a hot plasma created by firing a powerful laser at a target. EUV lithography requires operating in a vacuum and developing new resist materials since existing ones strongly absorb the short wavelength light. It holds the potential to further advance computer processing power through smaller transistor sizes.
What's hot (20)
Metallization techniques for high efficiency solar cells
Metallization techniques for high efficiency solar cells
Extreme Ultraviolet Litography (EUVL): novel patterning materials, progress a...
Extreme Ultraviolet Litography (EUVL): novel patterning materials, progress a...
Similar to Enhancement of dye solar cell by adding n ps
Thin-Film Photovoltaics R&D: Innovation, Opportunities_Ennaoui
This document discusses thin-film photovoltaics research and opportunities. It covers several topics:
- Thin-film solar cell technologies like CIGS, CdTe, and emerging materials like CZTS have higher efficiencies than earlier generations and lower production costs. Research aims to further improve efficiency and reduce costs.
- The Helmholtz-Zentrum in Berlin conducts R&D on thin-film photovoltaics including advanced materials, device concepts, and characterization techniques to develop more efficient and cost-effective solar cells.
- Issues like material scarcity for some thin-film technologies are being addressed through research into alternative materials and processes to produce solar cells on flexible substrates using less raw
EAMTA keynote 2014
This document summarizes a simulation approach to modeling quantum dot solar cells. It describes how quantum dots can enable intermediate band solar cells with efficiencies over 60% by absorbing low-energy photons. The modeling approach uses drift-diffusion equations coupled with rate equations to model carrier transport and capture/escape processes in the quantum dots. Simulation results are presented and show good agreement with experimental measurements, demonstrating how factors like quantum dot density and doping affect cell performance. Non-linear behavior is also examined and attributed to carrier dynamics in the quantum dots.
poster New Mexico Consortium 2015
1) When metal nanoparticles are excited by light, they exhibit localized surface plasmon resonance (LSPR) which enhances the local electric field. This study investigates how gold nanoparticles with silica shells of different thicknesses influence the photoluminescence of nearby quantum dots (QDs).
2) Time-resolved fluorescence and photon correlation measurements show that QDs near gold nanoparticles with thinner silica shells have higher biexciton emission quantum yields compared to QDs on glass.
3) Electrodynamics modeling suggests that the enhanced local electric field and additional non-radiative energy transfer from QDs to gold nanoparticles impact exciton and biexciton emission intensities and lifetimes in a way that increases the bi
Analysis Of Carbon Nanotubes And Quantum Dots In A Photovoltaic Device Slide ...
Francis' presentation to Louis Stokes Association for Minority Participation. Since I co-authored this work I think I have the right to a copy. I was the graduate student Francis was working with.
Advances in Scintillation Material - Dr. Kanai Shah, President, RMD, Inc.
Advances in Scintillation Material - Dr. Kanai Shah, President, RMD, Inc.Dynasil Corporation of America
> Discovery of LaCl3:Ce, LaBr3:Ce led to a new era in halide scintillator research
- CeBr3, SrI2:Eu, Tl2LaCl5:Ce, others
- Elpasolites (CLYC, CLLBC, Tl-elpasolites)
Li-containing elpasolites provide combined gamma-neutron detection, with chlorides adding fast neutron spectroscopic capabilities
> Several new scintillators provide gamma-resolution of ≤3% (FWHM)
> Modulation of proportionality a new trend in scintillator optimization
> Organic crystals, plastics and organic-inorganic composites with gamma-neutron PSD attractive for multimode, low cost, large systems
> Ceramic scintillators promising for high energy radiography and PET
> Commercialization of some of the promising candidates underway.Singularit University presentation Nanotechnology nextbigfuture.com
2010 Singularity university presentation: Latest Developments and Current Capabilities in Nanotechnology
from nextbigfuture.com
VCSELs.pdf
1) The surface-emitting laser (SEL), also known as the vertical-cavity surface-emitting laser (VCSEL), was invented in 1977 and first demonstrated in 1979. It emits light from its surface rather than from its edge like conventional lasers.
2) VCSEL research has progressed through several generations, reaching commercial applications in the late 1980s and 1990s. Key milestones included room temperature operation in 1988, sub-milliamp threshold currents, and introduction into gigabit ethernet networks in 1999.
3) VCSELs have many advantages over conventional lasers including ultralow threshold currents (as low as microamps), high modulation bandwidth, easy testing and packaging, and potential
Atomic Layer Deposition: a process technology for transparent conducting oxides
talk delivered by Prof. Paul Chalker, University of Liverpool @ the CDTPV TCO masterclass on Nov 12 2014
(Public) se 2000-presentation_20140120
Se-2000 for modular design provides modularity and high measurement performance in a compact table footprint. This cost effective tool includes automatic sample positioning suitable for R&D laboratories and production quality monitoring.
Materials Science Research: Testing and Manufacturing in Space
This document discusses materials science research related to testing and manufacturing in space, with a focus on growing indium iodide (InI) crystals. It includes:
1) Details on previous experiments growing tellurium and zinc-doped indium antimonide crystals on the International Space Station in 2002 using SUBSA hardware.
2) An overview of why InI is a promising room temperature radiation detector material due to its properties such as bandgap and atomic number.
3) Details of experiments growing InI crystals in microgravity using SUBSA and the challenges of high vapor pressure detector materials.
Analysis Of Carbon Nanotubes And Quantum Dots In A Photovoltaic Device
Analysis of Carbon Nanotubes and Quantum Dots in a Photovoltaic Device
A poster prepared by Francis and me; presented by Francis. I modified on of the photographs used, in this copy.
OLEDs,the dawn of ultra efficient lighting
The document summarizes research on OLED lighting conducted by Prof. Monkman's OEM Research Group. It discusses how OLED lighting offers better design flexibility compared to traditional lighting. However, two major challenges remain: improving light out-coupling from OLEDs and developing better blue emitter materials that are bright and stable enough. The document also examines the temperature dependence of phosphorescence in polymer films like PVK, providing evidence that monomeric and dimeric ground state species exist.
Nano Materials to Devices - Charanadhar
This doctoral dissertation examines the use of reduced graphene oxide and its composites for various energy applications. The document outlines the synthesis of reduced graphene oxide through chemical reduction of graphene oxide. Characterization shows the reduced graphene oxide has a layered morphology. The dissertation discusses using reduced graphene oxide composites with materials like ZnO, Ag, and Ag2O as electron transport layers to improve dye-sensitized solar cell performance. Reduced graphene oxide is also investigated as a counter electrode material for dye-sensitized solar cells. Additionally, the potential of reduced graphene oxide composites with polymers and metal oxides for supercapacitors, lithium-ion batteries, and electromagnetic interference shielding is reviewed. Specific applications demonstrated include a reduced graphene oxide
Amber oled lighting technology development and application (3)
Description of the development, opportunity and extensive verification test plan performed to bring this amber OLED device to market.
2015NNINreuRA_King
This document summarizes the construction of a substrate for characterizing the electrical conductivity of thin films during atomic layer deposition (ALD). Key steps included:
1) Patterning electrodes on a silicon wafer with thermal oxide using electron beam evaporation of gold and plasma-enhanced chemical vapor deposition of silicon dioxide as an insulating layer.
2) Characterizing the substrate using profilometry, optical microscopy, and scanning electron microscopy to confirm feature sizes and film morphology.
3) Future work involves using the substrate for in situ electrical measurements during ALD to determine when a continuous film forms.
Synthesis and characterisation of k doped zno 1
Thin film technology has been developed for integrated circuits. Thin films are two-dimensional due to their small thickness and need a substrate. They are created through atomic/molecular processes like chemical vapor deposition or physical deposition. Structural properties are analyzed using electron diffraction and electrical properties depend on temperature. Optical measurements determine band structure and lattice vibrations. Applications include drug delivery, optical coatings, transistors, solar cells, and metallurgical coatings. Zinc oxide thin films were synthesized with potassium doping and analyzed. X-ray diffraction showed the films were phase pure wurtzite structure. Resistance decreased and particle size increased with higher doping concentration.
Thin Film Silicon Nanowire - Prof.Rusli
This document presents research on thin film silicon nanowire/PEDOT:PSS hybrid solar cells with a two-step surface treatment. The researchers fabricated hybrid solar cells using silicon nanowires grown on a 10.6 μm epitaxial silicon film via metal-catalyzed electroless etching. They applied a two-step surface treatment of O2 plasma treatment followed by HF etching to partially remove surface oxide and achieve better surface passivation. Treated cells showed higher efficiency of up to 7.27% compared to untreated cells due to improved open-circuit voltage, short-circuit current density, and fill factor attributed to the smoother and more hydrophilic surface after treatment, facilitating better PEDOT:PSS coverage. The
K010436772
This document summarizes the results of a simulation study investigating light absorption in organic solar cells with smooth and pyramidal textured surfaces. The study first optimized a flat organic solar cell structure by simulating the effects of varying each layer's thickness on short-circuit current and quantum efficiency. The optimized flat cell achieved 13.65 mA/cm2 short-circuit current and 84% quantum efficiency at 640 nm. It then proposed a pyramid textured surface to enhance light trapping and absorption compared to a smooth surface. The effects of period and height of the pyramids were analyzed to validate the light trapping model.
Dye-sensitized and Perovskite Solar Cells | Peter Holliman, University of Bangor
Lecture delivered by Peter Holliman, University of Bangor. Super Solar Research Methods in PV, University of Liverpool, April 2016.
Talk 3_0
This document summarizes research on Au/TiO2 nanoparticle catalysts. It describes the preparation of Au/TiO2 nanoparticles using laser vaporization and solution deposition methods. The document outlines objectives to understand size and loading effects on catalyst performance and the reaction mechanism. It then details various characterization techniques used such as CO oxidation activity screening, XPS analysis, and electron microscopy to analyze the Au/TiO2 nanoparticles.
Similar to Enhancement of dye solar cell by adding n ps (20)
Thin-Film Photovoltaics R&D: Innovation, Opportunities_Ennaoui
Thin-Film Photovoltaics R&D: Innovation, Opportunities_Ennaoui
Analysis Of Carbon Nanotubes And Quantum Dots In A Photovoltaic Device Slide ...
Analysis Of Carbon Nanotubes And Quantum Dots In A Photovoltaic Device Slide ...
Advances in Scintillation Material - Dr. Kanai Shah, President, RMD, Inc.
Advances in Scintillation Material - Dr. Kanai Shah, President, RMD, Inc.
Singularit University presentation Nanotechnology nextbigfuture.com
Singularit University presentation Nanotechnology nextbigfuture.com
Atomic Layer Deposition: a process technology for transparent conducting oxides
Atomic Layer Deposition: a process technology for transparent conducting oxides
Materials Science Research: Testing and Manufacturing in Space
Materials Science Research: Testing and Manufacturing in Space
Analysis Of Carbon Nanotubes And Quantum Dots In A Photovoltaic Device
Analysis Of Carbon Nanotubes And Quantum Dots In A Photovoltaic Device
Amber oled lighting technology development and application (3)
Amber oled lighting technology development and application (3)
Dye-sensitized and Perovskite Solar Cells | Peter Holliman, University of Bangor
Dye-sensitized and Perovskite Solar Cells | Peter Holliman, University of Bangor
Recently uploaded
Essentials of Automations: The Art of Triggers and Actions in FME
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
20240607 QFM018 Elixir Reading List May 2024
Everything I found interesting about the Elixir programming ecosystem in May 2024
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!
As the digital landscape continually evolves, operating systems play a critical role in shaping user experiences and productivity. The launch of Nitrux Linux 3.5.0 marks a significant milestone, offering a robust alternative to traditional systems such as Windows 11. This article delves into the essence of Nitrux Linux 3.5.0, exploring its unique features, advantages, and how it stands as a compelling choice for both casual users and tech enthusiasts.
UiPath Test Automation using UiPath Test Suite series, part 6
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Building RAG with self-deployed Milvus vector database and Snowpark Container...
This talk will give hands-on advice on building RAG applications with an open-source Milvus database deployed as a docker container. We will also introduce the integration of Milvus with Snowpark Container Services.
UiPath Test Automation using UiPath Test Suite series, part 5
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
Introducing Milvus Lite: Easy-to-Install, Easy-to-Use vector database for you...
Join us to introduce Milvus Lite, a vector database that can run on notebooks and laptops, share the same API with Milvus, and integrate with every popular GenAI framework. This webinar is perfect for developers seeking easy-to-use, well-integrated vector databases for their GenAI apps.
Generative AI Deep Dive: Advancing from Proof of Concept to Production
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
Climate Impact of Software Testing at Nordic Testing Days
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
How to Get CNIC Information System with Paksim Ga.pptx
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AI
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AIVladimir Iglovikov, Ph.D.
Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentationsA tale of scale & speed: How the US Navy is enabling software delivery from l...
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
Removing Uninteresting Bytes in Software Fuzzing
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
Communications Mining Series - Zero to Hero - Session 1
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
Recently uploaded (20)
Essentials of Automations: The Art of Triggers and Actions in FME
Essentials of Automations: The Art of Triggers and Actions in FME
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!
Goodbye Windows 11: Make Way for Nitrux Linux 3.5.0!
UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6
Building RAG with self-deployed Milvus vector database and Snowpark Container...
Building RAG with self-deployed Milvus vector database and Snowpark Container...
UiPath Test Automation using UiPath Test Suite series, part 5
UiPath Test Automation using UiPath Test Suite series, part 5
Introducing Milvus Lite: Easy-to-Install, Easy-to-Use vector database for you...
Introducing Milvus Lite: Easy-to-Install, Easy-to-Use vector database for you...
Generative AI Deep Dive: Advancing from Proof of Concept to Production
Generative AI Deep Dive: Advancing from Proof of Concept to Production
Climate Impact of Software Testing at Nordic Testing Days
Climate Impact of Software Testing at Nordic Testing Days
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...
How to Get CNIC Information System with Paksim Ga.pptx
How to Get CNIC Information System with Paksim Ga.pptx
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AI
Enchancing adoption of Open Source Libraries. A case study on Albumentations.AI
A tale of scale & speed: How the US Navy is enabling software delivery from l...
A tale of scale & speed: How the US Navy is enabling software delivery from l...
Communications Mining Series - Zero to Hero - Session 1
Communications Mining Series - Zero to Hero - Session 1
Enhancement of dye solar cell by adding n ps
- 1. Thin film Deposition Of Nano Colloidal Prepared By Laser Ablation On ITO Substrate For Optoelectronics Applications قواعد على بالليزر محضر نانوي محلول من رقيقه اغشيه ترسيب كهروبصريه تطبيقات في واستخدامها االنديوم القصدير اوكسيد by Ghufran Sattar Jaber Supervised by Assist. Prof. Dr. Abdulrahman K. Ali Assist. Prof. Dr. Mukhlis M. Ismail
- 2. Aim of Work • Fabrication of Dye Sensitized Solar Cell • Enhance the efficiency by adding gold nanoparticles
- 3. Generations of Solar Cell • The first a semiconductor PN junction solar cell such as silicon. • The second TF-solar cell depend on thin layers of different semiconductor materials like amorphous silicon(organic Solar cell). • The third is based on devices that may exceed Schockley-Queisser limit like multi-junction (tandem) solar cell and DSSC.
- 7. PLAL
- 8. Fabrication Steps of The DSSC
- 22. Size Distributions of AuNPs 0 2 4 6 8 10 12 14 16 18 20 22 10 20 30 40 50 60 70 80 90 100 110 Number Nanoparticle Diameter (nm) AuNPs
- 23. TiO2-surface
- 25. Energy Band Gab for DSSC
- 26. 0 0.5 1 1.5 2 2.5 3 3.5 350 450 550 650 750 850 Abs λ(nm) AuNPs dye only dye+AuNPs Sensitized Dye Enhancement
- 27. 0 0.2 0.4 0.6 0.8 1 1.2 1.4 350 380 410 440 470 500 530 560 590 620 Abs λ(nm) only dye Au.NPs+ dye Spectroscopy of DSSC
- 28. 0 2 4 6 8 10 12 14 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Jsc (mA/cm2) V(Volt) DSSC with AuNPs DSSC without AuNPs Electrical Measurement for Our Lab TiO2-past
- 29. 0 2 4 6 8 10 12 14 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 J SC (mA/cm 2 ) V(Volt) DSSC with AuNPs DSSC without AuNPs Electrical Measurement for Dyesol TiO2- past
- 30. Cell type 𝑉𝑜𝑐 (Volt) J𝑠𝑐 (𝑚𝐴/m2) Fill Factor Efficiency Enhanced efficiency Gcell without AuNPs(Dyesol) 0.59 5.25 0.359 1.75 60% GCell with AuNPs(Dyesol) 0.63 9.25 0.504 2.8 GCell without AuNPs (our lab) 0.67 4.75 0.359 1.07 87% Gcell with AuNPs(our lab) 0.65 12.5 0.258 2.009
- 31. 0 10 20 30 40 50 60 70 80 90 100 300 500 700 900 1100 IPCE% λ(nm) IPCE with AuNPs IPCE without AUNPs IPCE-Measurements
- 32. The Responsivity 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 100 300 500 700 900 1100 1300 R(µA/cm) λ(nm) DSSC without AuNPs DSSC with AuNPs
- 33. Final –Assembly of DSSC
- 34. DSSC-Advantages
- 35. Face And Back-Measurements 0 1 2 3 4 5 6 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 J SC (mA/cm2) V(Volt) DSSC back DSSC face DSSC with 2-Faces
- 36. Cell type 𝑉𝑜𝑐 (Volt) J𝑠𝑐 (𝑚𝐴/cm2) Fill Factor Efficiency GCell with AuNPs (face of the cell) 0.65 5.357143 0.3 1.09 GCell with AuNPs (back of the cell) 0.62 5.714286 0.25 1
- 37. Conclusion • Adding AuNPs to N719-dye having high absorption peak about twice peak of N719-dye due the high SPR of gold nanoparticles which lead to increase the total absorption. • DSSC have various applications and effective in aviation and space.
- 38. Future work • Another method can be used to prepare TiO2 such as electrophortic-deposition. • Using gel-electrolyte to get good sealing regard a main problem in DSSC fabrication. • Using another noble metal(like silver nanoparticles) with different particle size to enhance the efficiency of DSSC, also another preparation method can be used to get difference nano-shapes such as chemical method.