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초록
A new donor-acceptor copolymer, containing benzodithiophene (BDT) and methyl thiophene-3-carboxylate (3MT) units, is designed and synthesized for polymer solar cells (PSCs). The 3MT unit is used as an electron acceptor unit in this copolymer to provide a lower highest occupied molecular orbital (HOMO) level for obtaining polymer solar cells with a higher open-circuit voltage (VOC). The resulting bulk heterojunction PSC made of the copolymer and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) exhibits a power conversion efficiency (PCE) up to 4.52%, a short circuit current (JSC) of 10.5 mA center dot cm-2, and a VOC of 0.86 V.
키워드
bulk heterojunction; copolymerization; conjugated polymers; PCBM; polymer solar cells; POLYMER SOLAR-CELLS; OPEN-CIRCUIT VOLTAGE; POLY(ALKYL THIOPHENE-3-CARBOXYLATES); EFFICIENCY; POLYTHIOPHENES; DERIVATIVES; MOBILITY; RING
- 제목
- Enhanced Performance of Organic Photovoltaic Cells Fabricated with a Methyl Thiophene-3-Carboxylate-Containing Alternating Conjugated Copolymer
- 저자
- Cho, Min Ju; Seo, Jangwon; Kim, Kyung Hwan; Choi, Dong Hoon; Prasad, Paras N.
- 발행일
- 2012-01-27
- 유형
- Article
- 권
- 33
- 호
- 2
- 페이지
- 146 ~ 151