| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Synthesis and Characterization of alkylthio side chain containing benzo[1,2-b:4,5-b’]dithiophene-Based 2D-conjugated Polymer for Organic Photovoltaic Cells |
| 초록 |
Two-dimensional (2D)-conjugated copolymers based on benzo[1,2-b:4,5-b’]dithiophene(BDT) with 2-((2-Ethylhexyl)bithiophene) or 2-((2-Ethylhexyl)thio)bithiophene), respectively and benzothiadiazole (BT) with thiophene as the π-bridge(PBDTBT-DTBT and PBDTBT-S-DTBT) were designed and synthesized as donor materials for Organic photovoltaic cells. The introduction of S atom with some π-acceptor capability due to the formation of pπ(C)-dπ(S) orbital overlap is effective in further lowing the HOMO energy level to attain higher open-circuit voltage(Voc). Bulk heterojunction photovoltaic cells were fabricated with an conventional structure of ITO/PEDOT:PSS/polymer:PC71BM/Ca/Al. The device fabricated using the PBDTBT-S-DTBT:PC71BM as an active layer shows a maximum power conversion efficiency (PCE) of up to 2.05% with an open-circuit voltage of 0.83 V, a short-circuit current of 7.56 mA/cm2, and a fill factor of 0.33 under air mass 1.5 global (AM1.5G) illumination conditions (100 mW/cm2). |
| 저자 |
박은혜, 김지훈, 안종준, 황도훈
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| 소속 |
부산대 |
| 키워드 |
Organic Photovoltaic Cells |
| E-Mail |
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