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INTRODUCTION
 SOLAR CELL
Solar cell or photovoltaic cell, is an electrical device that converts the energy of
light direc...
Need…
 Global energy crisis.
• Energy demand will double in next 50 years.
• Fossil fuels stock is running out
The amount...
PROCESSES IN AN ORGANIC SOLAR CELL
• Absorption of light
• Charge transfer and separation of the opposite
charges
• Charge...
Latest work…
 Researchers at Spain's Universitat Jaume I in Castelló and Oxford
University are claiming a new record effi...
EXPERIMENTAL OUTLOOK
 Measurements of Current−voltage, capacitance−voltage,
and external quantum efficiency are taken.
 ...
Advantages and Disadvantages:-
 Advantages
Environmentally Safe
Flexible
Lightweight
Inexpensive
 Disadvantages
Low effi...
Technological Importance :-
Bring some polymer paint and coat the windows and walls to make
your own solar cell
Transporta...
FUTURE CHALLENGES
 The present efficiency of polymer solar cells lies near 10%, well below silicon cells.
 Polymer solar...
REFERENCES
 Introduction to polymer solar cells (3Y280) by René Janssen
Departments of Chemical Engineering & Chemistry a...
Thanks !
Polymer Solar Cell
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Polymer Solar Cell

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Solar energy is best renewable energy. It is our future light source.

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Polymer Solar Cell

  1. 1. INTRODUCTION  SOLAR CELL Solar cell or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic cells.  ORGANIC SOLAR CELL The approach is based on solar cell made by entirely new materials, conjugated polymers and molecules.
  2. 2. Need…  Global energy crisis. • Energy demand will double in next 50 years. • Fossil fuels stock is running out The amount of solar energy intercepted by the earth in 1 hour is more than the annual world energy consumption
  3. 3. PROCESSES IN AN ORGANIC SOLAR CELL • Absorption of light • Charge transfer and separation of the opposite charges • Charge transportation • Charge collection
  4. 4. Latest work…  Researchers at Spain's Universitat Jaume I in Castelló and Oxford University are claiming a new record efficiency of 15.6 percent for a graphene-based solar cell.  It uses a combination of titanium oxide and graphene as a charge collector and perovskite as a sunlight absorber.  It is manufactured at low temperatures using a solution based deposition technique  Advantages :-  lower potential production costs  technology can also be used on flexible plastics.
  5. 5. EXPERIMENTAL OUTLOOK  Measurements of Current−voltage, capacitance−voltage, and external quantum efficiency are taken.  Doping with bis-(trifluoromethanesulfonyl)amide in graphene leads to a shift in chemical potential which increases .  the graphene carrier density (decreasing the cell series resistance)  the cell’s built-in potential (increasing the open circuit voltage) both of which improve the solar cell fill factor. a) Without Doping b) With Doping
  6. 6. Advantages and Disadvantages:-  Advantages Environmentally Safe Flexible Lightweight Inexpensive  Disadvantages Low efficiency (only 8% efficiency compared to the 25% of silicon cells) Short lifetime
  7. 7. Technological Importance :- Bring some polymer paint and coat the windows and walls to make your own solar cell Transportation Military use
  8. 8. FUTURE CHALLENGES  The present efficiency of polymer solar cells lies near 10%, well below silicon cells.  Polymer solar cells also suffer from environmental degradation, lacking effective protective coatings.  Further improvements in performance are needed  to promote charge carrier diffusion  transport must be enhanced through control of order and morphology  interface engineering must be applied to the problem of charge transfer across interfaces.
  9. 9. REFERENCES  Introduction to polymer solar cells (3Y280) by René Janssen Departments of Chemical Engineering & Chemistry and Applied Physics Eindhoven University of Technology, The Netherlands  Bonaccorso, F.; Colombo, L.; Yu, G.; Stoller, M.; Tozzini, V.; Ferrari, A. C.; Ruoff, R. S.; Pellegrini, V. Graphene, related two dimensional crystals, and hybrid systems for energy conversion and storage  M. Xiaochang, T. Sefaattin, P. Maureen, B. Kara, R. Andrew, A. Bill, H. Arthur, High efficiency solar cells by chemical doping, Nano Letters.  www.Wikipedia.org  www.google.com
  10. 10. Thanks !

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