| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 가을 (10/06 ~ 10/07, 김대중 컨벤션센터) |
| 권호 |
36권 2호 |
| 발표분야 |
유기전자소자용 소재 및 소자(분자전자소재 부문위원회) |
| 제목 |
Enhancement of P3HT/PCBM Photovoltaic Efficiency using Rod-Coil Diblock Copolymer as An Organic Cathode Interfacial Layer |
| 초록 |
By adding a rod-coil diblock copolymer, poly(3-hexylthiophene)-b-poly[(3-trimethoxysilyl)propyl methacrylate], into P3HT and PCBM mixture, we fabricated bulk hetero junction (BHJ) photovoltaic cell. In the presence of the 10-25% P3HT-b-PTMSM, the power conversion efficiency of the photovoltaic cell increased nearly 25-80% from that of the device fabricated without the copolymer. XPS depth profile of active layer indicated that the P3HT-b-PTMSM was located near the top surface and the alkoxy silane groups of PTMSM block was cured to SiOx by thermal annealing process. The P3HT and PCBM mixture with the copolymer exhibited higher P3HT crystallinity than that without the copolymer as evidenced by UV/Vis spectra. DSC data indicated that the PTMSM block is miscible with PCBM. This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant [2010-0026421] funded by the Korean government (MEST) and the Program for Integrated Molecular System (PIMS) at GIST, Korea. |
| 저자 |
한민구1, 김형수1, 서형탁2, Biwu Ma2, 박지웅1
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| 소속 |
1광주과학기술원, 2Lawrence Berkeley National Laboratory |
| 키워드 |
Organic photovoltaics; Rod-Coil block copolymer
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| E-Mail |
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