发明授权
- 专利标题： Organic photovoltaic cell incorporating electron conducting exciton blocking layers
- 专利标题（中）： 掺有电子传导激子阻挡层的有机光伏电池
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申请号： US13400963申请日： 2012-02-21
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公开(公告)号： US08816332B2公开(公告)日： 2014-08-26
- 发明人: Stephen R. Forrest , Brian E. Lassiter
- 申请人： Stephen R. Forrest , Brian E. Lassiter
- 申请人地址： US MI Ann Arbor
- 专利权人： The Regents of the University of Michigan
- 当前专利权人： The Regents of the University of Michigan
- 当前专利权人地址： US MI Ann Arbor
- 代理机构： Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- 主分类号： H01L29/08
- IPC分类号： H01L29/08 ; H01L35/24 ; H01L51/00
摘要：
The present disclosure relates to photosensitive optoelectronic devices including a compound blocking layer located between an acceptor material and a cathode, the compound blocking layer including: at least one electron conducting material, and at least one wide-gap electron conducting exciton blocking layer. For example, 3,4,9,10 perylenetetracarboxylic bisbenzimidazole (PTCBI) and 1,4,5,8-napthalene-tetracarboxylic-dianhydride (NTCDA) function as electron conducting and exciton blocking layers when interposed between the acceptor layer and cathode. Both materials serve as efficient electron conductors, leading to a fill factor as high as 0.70. By using an NTCDA/PTCBI compound blocking layer structure increased power conversion efficiency is achieved, compared to an analogous device using a conventional blocking layers shown to conduct electrons via damage-induced midgap states.
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