This document discusses power generating solar paint as a new technology for generating electricity. Solar paint consists of quantum dots of materials like cadmium sulfide, cadmium selenide, and titanium dioxide mixed into a paint that can be applied to surfaces. It can be produced at low cost and applied flexibly to buildings, vehicles, or other surfaces. The paint converts sunlight into electricity with reasonable efficiency compared to conventional solar cells and has potential applications in powering personal devices or vehicles by coating surfaces. Further improvements are still needed to optimize efficiency and enable real-world applications of the technology.

1. Power Generating Solar Paint
Presented by
ABHISHEK.M.HAVANUR
1
KHKabbur institute of engineering
Dharwad

2. Topics to be covered
 Introduction
 Conventional Solar Cell
 Quantum dots
 Solar paint
 Graph
 Photo electrochemical
performance
 Comparison
 Applications
 Challenges
 Conclusion
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3. Introduction
 Urgent need for new ways of generating electricity
 Development of new technology
 Low cost solar energy
 Paint coatings or Flexible plastic sheets (PET)
 Applied to building, vehicle and appliances
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4. Conventional solar cell
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5. Quantum dots
 Semiconductor whose excitons are confined in all three spatial
dimensions
 Typically have dimensions measured in nanometers
 Boosts the energy conversion efficiency
 Types of quantum dot solar cells
a. ETA(Extremely thin absorber) cells
b. Sensitizers
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6. Continued….
a) Can be linked
together as
molecules
b) Lattices
c) Attached to a
polymer backbone
d) Incorporated into a
polymer thin film 6

7. How to prepare solar paint
 Consists of Cds, CdSe and
TiO2 particles
 There are two methods
a. Physical mixing of TiO2 and
CdS in a mixed solvent
b. Pseudo-SILAR(Sequential
Ionic Layer Adsorption and
Reaction) method
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8. A) Tert-butanol and water
as solvent
B) CdS powder and TiO2
powder are slowly
mixed into the solvent
C,D) CdS deposited on
TiO2 after
pseudo-SILAR
process
E,F) Annealed films of
solar paint
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9. Solar paint
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10. Graph
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11. Photo electrochemical performance
electrode ratio method Jsc (mA/cm2
) Voc (mV) η (%)
CdS/TiO2 1.5:1.0 Mix 2.26 600 0.71
CdS/ZnO 2.25:1.0 Mix 3.01 675 0.57
CdS/ZnO/TiO2 2.0:1.0:0.2 Mix 3.63 685 0.89
CdS/TiO2 1.0:3.5 SILAR 2.33 615 0.87
CdSe/TiO2 1.0:5.0 SILAR 2.12 608 0.83
CdS–
TiO2/CdSe–TiO2
1.0:1.5 SILAR, mix 3.1 585 1.08
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12. Comparison
Conventional solar cell
 Not flexible and heavy
 Can not respond at low light
levels
 Provides power
comparatively at higher cost
Cell made from solar paint
 Flexible and very thin
 Can even respond at low
light levels
 Provides power at low cost
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13. Challenges
 Improving the light to energy conversion rate
 Applying paint directly on to the roofs of the building
 Work still needs to be done to improve the conducting
material
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14. Future Applications
 Sweater coated with paint could power a cellphone or other
wireless devices
 A hydrogen powered car coated with paint could convert
energy into electricity to continually recharge the battery
 Industries can generate their own power just by coating paint
on the building surface
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15. Conclusion
The paint can be made cheaply and in large quantities. If the
efficiency is improved somewhat it will make a real difference in
meeting energy needs in future
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