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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