Polymer Solar Cell
Solar energy is best renewable energy. It is our future light source.
Published on: Mar 4, 2016
Transcripts - Polymer 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.
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
PROCESSES IN AN ORGANIC SOLAR CELL
• Absorption of light
• Charge transfer and separation of the opposite
• Charge transportation
• Charge collection
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
lower potential production costs
technology can also be used on flexible plastics.
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
the graphene carrier density (decreasing the cell
the cell’s built-in potential (increasing the open
both of which improve the solar cell fill factor.
a) Without Doping b) With Doping
Advantages and Disadvantages:-
Low efficiency (only 8% efficiency compared to the 25% of silicon cells)
Technological Importance :-
Bring some polymer paint and coat the windows and walls to make
your own solar cell
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
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.
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.