Journal
ADVANCED MATERIALS
Volume 29, Issue 19, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201606729
Keywords
double bulk heterojunctions; mobility; organic solar cells; power conversion efficiency; stamping transfer method
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Funding
- Foundation for Innovation Research Groups of the National Natural Science Foundation of China (NSFC) [61421002]
- NSFC [61675041, 21674093, 61177032, 21372168]
- Project of Science and Technology of Sichuan Province [2016HH0027]
- International Science and Technology Cooperation Program of China (ISTCP) [2016YFE0102900]
- Young 1000 Talents Global Recruitment Program of China
- UESTC Excellent Young Scholar Project
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An organic solar cell (OSCs) containing double bulk heterojunction (BHJ) layers, namely, double-BHJ OSCs is constructed via stamp transferring of low bandgap BHJ atop of mediate bandgap active layers. Such devices allow a large gain in photocurrent to be obtained due to enhanced photoharvest, without suffering much from the fill factor drop usually seen in thick-layer-based devices. Overall, double-BHJ OSC with optimal approximate to 50 nm near-infrared PDPP3T:PC71BM layer atop of approximate to 200 nm PTB7-Th:PC71BM BHJ results in high power conversion efficiencies over 12%.
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