Enhancement of Donor–Acceptor Polymer Bulk Heterojunction Solar Cell Power Conversion Efficiencies by Addition of Au Nanoparticles
Dong Hwan Wang(University of California, Santa Barbara), Do Youb Kim(Korea Advanced Institute of Science and Technology), Kyeong Woo Choi(Korea Advanced Institute of Science and Technology), Jung Hwa Seo(University of California, Santa Barbara), Sang Hyuk Im(Korea Research Institute of Chemical Technology), Jong Hyeok Park(Korea Advanced Institute of Science and Technology), O Ok Park(University of California, Santa Barbara), Alan J. Heeger(University of California, Santa Barbara)
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Abstract
Golden solar cells: Several positive effects arise from the addition of truncated octahedral Au nanoparticles (ca. 70 nm diameter) to bulk heterojunction (BHJ) photovoltaic cells fabricated from a variety of donor polymers and PC70BM as acceptor (see picture). At the optimized blend ratio of Au nanoparticles (5 wt %) in the active layer, the power conversion efficiency increased for all polymer/PC70BM systems under study.
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