Modeling the short-circuit current density of polymer solar cells based on P3HT:PCBM blend

We have investigated the short-circuit current density of organic solar cells based on poly (3-hexylthiophene)(P3HT)/6,6-phenyl C61-butyric acid methyl ester (PCBM) blend. In order to model charge collection efficiencies with respect to short circuit density in such blends, a full optical modeling o...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2007-03, Vol.91 (5), p.405-410
Main Authors: Monestier, Florent, Simon, Jean-Jacques, Torchio, Philippe, Escoubas, Ludovic, Flory, François, Bailly, Sandrine, de Bettignies, Remi, Guillerez, Stephane, Defranoux, Christophe
Format: Article
Language:English
Subjects:
Applied sciences
Electric power
Energy
Engineering Sciences
Exact sciences and technology
Materials
Natural energy
Optical modeling
Organic solar cells
P3HT:PCBM blend
Photovoltaic conversion
Short-circuit density
Solar cells. Photoelectrochemical cells
Solar energy
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Summary:We have investigated the short-circuit current density of organic solar cells based on poly (3-hexylthiophene)(P3HT)/6,6-phenyl C61-butyric acid methyl ester (PCBM) blend. In order to model charge collection efficiencies with respect to short circuit density in such blends, a full optical modeling of the cell is performed. From the distribution of the electromagnetic field, we compute the rate of exciton generation. This exciton generation rate is used as input in the transport equations of holes and electrons. Charge densities at steady state are obtained as solutions are used for computing short-circuit current densities generated in the cell. The dependence of short-circuit current densities versus the thickness of the blend is analyzed and compared with our experimental data and with data extracted from the literature.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2006.10.019