| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
유기전자소자용 소재 및 소자(분자전자소재 부문위원회) |
| 제목 |
Dithienothiophene/ benzothiadiazole based low band gap copolymers for bulk heterojunction photovoltaic cells |
| 초록 |
Two newly designed low band gap copolymers P2TDTT-BT and P2TDTT-DTBT, comprised of a substituted dithienyl-dithieno[3,2-b:2’,3’-d]thiophene derivative as a donor and a benzothiadiazole or dithienyl benzothiadiazole based acceptor, respectively, were synthesized by Stille polymerization. The UV-visible absorption of P2TDTT-BT and P2TDTT-DTBT films ranged from the UV to NIR regions. The HOMO/LUMO energy levels of P2TDTT-BT and P2TDTT-DTBT were estimated to be -5.41/-3.74 eV and -5.34/-3.65 eV, corresponding to energy band gaps of 1.67 and 1.69 eV, respectively. Bulk heterojunction photovoltaic cells were fabricated using a blend of P2TDTT-BT or P2TDTT-DTBT and PC61BM in a 1:1 ratio and delivered power conversion efficiencies of 0.31% and 0.92%, respectively. |
| 저자 |
김규리1, Abasaheb V. Patil1, 이우형2, 오민재1, 김서진1, 오준성1, 이정욱1, 이연식1, 강인남2, 이수형1
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| 소속 |
1전북대, 2가톨릭대 |
| 키워드 |
Low band gap; π-conjugated copolymer; donor-acceptor; photovoltaic solar cell
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| E-Mail |
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