Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3639273
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Funding
- National Natural Science Foundation of China (NSFC) [20973176, 20990234, 50821062, 20874111]
- Ministry of Science and Technology (MOST) [2011CB808502]
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In this letter, we employ a three-dimensional master equation calculation to investigate the mobility dependence of bulk heterojunction (BHJ) solar cell performance. By taking energetic disorder and morphology into consideration, we show mobility-enhanced device efficiency with a remarkable charge transport loss induced by molecular disorder and an open circuit voltage loss in high mobility region due to morphological defect-assisted bimolecular recombination. The result suggests that the description of interfacial processes is crucial in the modeling of BHJ photovoltaic devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3639273]
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