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《能源化学(英文版)》 2019-08
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Nanomorphology in A–D–A type small molecular acceptors-based bulk heterojunction polymer solar cells

Delong Liu;Ying Zhang;Gang Li;The Department of Electronic and Information Engineering, The Hong Kong Polytechnic University;The Department of Electronic and Information Engineering, The Hong Kong Polytechnic University Shenzhen Research Institute;  
Recent developments in acceptor–donor–acceptor(A–D–A) type non-fullerene acceptors have led to substantial improvements in bulk-heterojunction polymer solar cells efficiency. The device performance strongly depends on photoactive layer morphology, as the molecular packing, donor–acceptor interface and phase separation significantly affect the charge-transfer states and charge carrier dynamics. In this review, we start with a brief introduction of the techniques most effectively utilized to characterize multiphase morphology. Then, we summarize recent progress in A–D–A type acceptors, with the emphasis on understanding the molecular structure–morphology–performance relationships. Finally, an outlook on correlating morphological characteristics with photovoltage losses is presented for further improving device performance.
【Fund】: support by Research Grants Council of Hong Kong(Grant Nos.15246816 and 15218517);; the funding for Project of Strategic Importance provided by the Hong Kong Polytechnic University(Project Code:1-ZE29);; the Shenzhen Science and Technology Innovation Commission(Project no.JCYJ20170413154602102)
【CateGory Index】: TB383.1;TM914.4
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