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A benzodithiophene-thienothiophene derivative with cyano acrylate side chain: A novel donor polymer with deep HOMO level for p-n heterojunction solar cells
- Kim, Yu Jin;
- Ahn, Eun Soo;
- Hwang, Moon Chan;
- Park, Chan Eon;
- Kim, Yun-Hi
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4초록
A new promising benzodithiophene and thienothiophene-based copolymer with cyano acrylate side chain, BDT8TT, has been designed and synthesized for efficient bulk heterojunction solar cells. The copolymer shows good solubility and film-forming ability combining with 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 a highly deep-lying HOMO level at -5.76 eV. Good power conversion efficiencies are demonstrated in solar cell studies; the polymer solar cell was fabricated from the blend of the polymer as a donor and PC71BM as an acceptor without annealing and any additives. (C) 2016 Elsevier B.V. All rights reserved.
키워드
- 제목
- A benzodithiophene-thienothiophene derivative with cyano acrylate side chain: A novel donor polymer with deep HOMO level for p-n heterojunction solar cells
- 저자
- Kim, Yu Jin; Ahn, Eun Soo; Hwang, Moon Chan; Park, Chan Eon; Kim, Yun-Hi
- 발행일
- 2016-03
- 유형
- Article
- 저널명
- Thin Solid Films
- 권
- 603
- 페이지
- 165 ~ 172