A benzodithiophene–thienothiophene derivative with cyano acrylate side chain: A novel donor polymer with deep HOMO level for p–n heterojunction solar cells
作者： Yu Jin Kim , Eun Soo Ahn , Moon Chan Hwang , Chan Eon Park , Yun-Hi Kim
DOI: 10.1016/J.TSF.2016.02.004
关键词: Hybrid solar cell 、 Solar cell 、 Polymer chemistry 、 Photochemistry 、 Acrylate 、 Materials science 、 Organic solar cell 、 Acceptor 、 Side chain 、 Polymer solar cell 、 Open-circuit voltage
摘要: Abstract A new promising benzodithiophene and thienothiophene-based copolymer with cyano acrylate side chain, BDT8TT, has been designed synthesized for efficient bulk heterojunction solar cells. The shows good solubility film-forming ability combining excellent thermal stability. Furthermore, BDT8TT displays a broad absorption in the near-IR region (from 300 to 1000 nm). Specially, this conjugated polymer exhibits quite high open circuit voltage by highly deep-lying HOMO level at − 5.76 eV. Good power conversion efficiencies are demonstrated cell studies; was fabricated from blend of as donor PC71BM an acceptor without annealing any additives.
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