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MANUFACTURE OF ORGANIC PHOTOVOLTAICS

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  • 1. Prof. Dr. E. SIDDIK ICLI Solar Energy Institute, Ege University, İzmir Director of Turkish PV Technology Platform (UFTP)" “MANUFACTURE OF ORGANIC PHOTOVOLTAICS” SOLAR TURKEY Green Power Conferences20-21 September 2011, Renaissance Polat Istanbul Hotel, Istanbul, Turkey
  • 2. Ege University Solar Energy Institute (SEI): (http://eusolar.ege.edu.tr/)• SEI was established in 1978 for graduate education and research onsolar energy and its applications containing two divisions named Energyand Energy Technology.• Along with the solar energy, the other renewable energy resources likewind, biomass and geothermal, are being studied. • Solar electricity researches in SEI are being conducted by two work groups – PV Group and DSSC Group.  PV group concentrates on the lamination of silicon solar cells, design, utilization, testing and performance analysis of PV power system in different topologies.  DSSC group studies the development of organic dye- sensitized solar cells.
  • 3. 3. GENERATION PHOTOVOLTAICS Nanotechnology-Molecular Technology ORGANIC PHOTOVOLTAIC-OFV Technologies 1 – Organic Photovoltaics (Polymer based) - OFV 2 – Dye Sensitized Solar Cells – DSSC (or DSC) Approximately 40% of the total energy production & 70% ofelectricity production is consumed in buildings in Europe and US today
  • 4. Nano-”Molecular” Technology
  • 5. Function of a Solar Cell Based On Organic Dyes e S*/S+ e e CB 3,7eV ELEKTROLYTE e Counter electrode e (I-/I3-) e e 4,2eV e e e e EF 4,7eV e Te PDI V=Voc e e e Ce TiO2 e e Oe 4,85 eV e e 6,1eV e e e e e 7,4eV e e e S/S+ e e VB e e e Re-loadhu PDI/PMI; Ered=-1.05 V, Eox=1.25 V, Band gap=2.3 V, PDI; HOMO=5.9 eV, LUMO=3.6 eV (vs. Vacuum) TiO2; LUMO=4.2 eV
  • 6. Module Production Otomatic SerigraphyPRODUCTION OF 30x60 cm MODULE OF DSSC Solar Energy Institute of Ege University 6
  • 7. Production of OFV/DSSC at Solar Energy Institute Laboratories
  • 8. 2007 DSSC PANEL DSSC Module, 3% DSSC Panel Produce 25 W/m2
  • 9. Efficie ncy 11.04% 100% AM1.5 • -15]2 Efficie ncy 11.18% Current Density[mA/cm 65% AM1.5 -10 • -5 Efficie ncy 10.87% 9.5% AM1.5 • 0 0.0 0.2 0.4 0.6 0.8 Potential [V]
  • 10. Artificial Plant With Leaves Exhibited At EXPO 2005
  • 11. “Plastic” Solar Cell Module 11
  • 12.  This work presents that visible light soaking alone is not a dominant stress factor (use light soaking 2,5 sun equivalent intensity). Separation between the effects of1. the stresses of visible light soaking,2. UV illumination and3. thermal treatment on long term stability is possible in Dye Sensitized Solar Cells (DSSC). UV stability has been achieved by using MgI2 as additive to the electrolyte. 12
  • 13. THERMAL STABILITYBest stability result (efficiency) achieved so far with thermal ageing at 60 and 85o C without light soaking .The electrolyte in the 60o C test is based on dimethylpropyl imidazolium iodide (DMPII), LiI, I2, TBP and pripionitrile. In the 85o C test the electrolyte also contained Mg I2 , in the following compositions: 1.5 M hexylmethylimidazolium iodide (HMII), 0.12 M Mg I2 , 0,6 M TBP in propionitrile (PN) solvent Thermal stress appears on of the most critical factors determining the long term stability of nc-DSC and is strongly related to the chemical composition of electrolyte solvents and additives. 13
  • 14. Semiconducting and Metallic Polymers Functional Ink Plastic ROLL-to-ROLL Processs Plastic Substrate for Organic based Solar Cells
  • 15. Surface modification Roll-to-roll process
  • 16. AVUSTRALIA DYESOL ENGLAND G24 INNOVATIONS Firmswww.g24i.com www.dyesol.com
  • 17. GENCOA Ltd., Dresden, Germany
  • 18.  One advantage of dye solar cell (DSC) modules is the combination of photovoltaic(PV) solar electricity with decorative aspects. Their report on the recent results achieved in the frame of the German project ColorSol. The project focuses on the application field of building- integrated PVs ( facades, PV- glazing, etc. ). Prototypes of glass facade elements (70cm x 200cm) have been developed which consist of several serially inter connected DSC modules Photo of a semi-transparent, glass frit-sealed dye solar module Mounted on an outdoor test stand at the each with a size of 30 cm x 30 cm. FRAUNHOFER ISE, Freiburg, GERMANY. 18
  • 19. Atmospheris Tests of Constructed DSC Panelin comparison with Si-Crystal and Si-Amorphous Pane
  • 20. Fig. 1: Generated electricity for clear and Fig. 2: Generated electricity for cloudy days betweensunny days between December and July for December and July for the DSC modules and thethe DSC modules and the Si module. Si module. Figure 1. show us that DSC modules yearly generated 10% more electricity than conventional crystalline-Si modules of the same rated output power in clear and sunny days. Figure 2. show us that DSC modules yearly generated 20% more electricity than conventional crystalline-Si modules of the same rated output power in cloudy days. 20
  • 21.  Upscale DSSC size to commercial size, their group was involved in developing a commercial DSC panel, which could show the industrial way and prospect. The DSSC panels that have 500 W power in total were used in a primary power- station and were tested in situ during running every day. The performance of DSC panel has no dramatic decrease in running during the past 354 days (in case of no electrolyte leak and damage) Fig. 6. Picture of 500 W DSSC primary power-station. 21
  • 22. Fig. 10. Photo of DSC module glass facade demonstrator as presented at the Fraunhofer booth during the 22nd European PhotovoltaicSolar Energy Conference, Milano, Italy2007.(200 cm x 60 cm ) 22
  • 23. Fig. 13. Full size 2 x 32-cell proto type modules in roof station. Dye sensitized solar cells (DSSCs) area low-cost alternative to photovoltaic silicon and thin film cells on the basis of materials (bulk titania powder in place of high purity semi conductors such as silicon) and process costs. 23
  • 24.  Upscale DSSC size to commercial size, their group was involved in developing a commercial DSC panel, which could show the industrial way and prospect. The DSSC panels that have 500 W power in total were used in a primary power- station and were tested in situ during running every day. The performance of DSC panel has no dramatic decrease in running during the past 354 days (in case of no electrolyte leak and damage) Fig. 6. Picture of 500 W DSSC primary power-station. 24
  • 25.  The developed large area module has realized a panel configuration (1190 mm x 840 mm ) consisting of an array of 16 cells (410mm x 140 mm). They expect this will be the next-generation solar cell. A developed single and continuous screen printing process to fabricate the electrode elements such as the current collecting grid, the insulating layer the power generation layer brings DSSC technology even closer to commercial applications. Fig. 5. Exterior view of the module panel of DSSC developed by Fujikura. 25
  • 26. 34th Executive Committee Meeting, Anaheim,California,29-30 Oct., 2009