发明授权
- 专利标题： Efficient solar cells via sulfur-fused helical perylene diimides design concept
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申请号： US16250440申请日： 2019-01-17
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公开(公告)号： US11245077B2公开(公告)日： 2022-02-08
- 发明人: Fred Wudl , Yonghao Zheng , Hengbin Wang , Hidenori Nakayama , Michael Chabinyc
- 申请人： The Regents of the University of California
- 申请人地址： US CA Oakland
- 专利权人： The Regents of the University of California
- 当前专利权人： The Regents of the University of California
- 当前专利权人地址： US CA Oakland
- 代理机构： Gates & Cooper LLP
- 主分类号： H01L51/00
- IPC分类号： H01L51/00 ; H01L51/42 ; H01L51/05
摘要：
Sulfur-fused perylene diimides (PDIs) having the formula 2PDI-nS, wherein n is an integer. Such sulfur-fused PDIs (e.g., 2PDI-2S, 2PDI-3S, and 2PDI-4S) are incorporated as electron acceptors in an active region of a bulk heterojunction solar cell and/or as an electron transport layer. Example solar cells exhibit a power conversion efficiency above 5% and a fill factor above 70% (a record high for non-fullerene bulk heterojunction solar cell devices) when 2PDI-nS is used as the electron acceptor. In addition, the solar cells exhibit low open circuit voltage (Voc) loss.
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