| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Control of Nano-scale Morphology of Polymer Solar Cells via Benzene-PC70BM Interaction |
| 초록 |
We designed and synthesized a series of highly soluble random copolymers (P(BDTT-PhC8TPD-TPD) comprising a two-dimensional (2D) electron-rich 2-ethylhexylthiophene-substituted benzo[1,2-b:4,5-b’]dithiophene (M1) electron-rich unit and various ratios of two side chain-functionalized thieno[3,4-c]-pyrrole-4,6-diones (M2 and M3) as planar electron-deficient units. The morphologies and photovoltaic performances of the bulk heterojunction blend films were examined, revealing concentration-dependent competitive benzene–benzene and benzene–fullerene interactions. A bulk heterojunction solar cell prepared using 10 mol% M2 (RP1) and PC70BM exhibited a power conversion efficiency (PCE) of 4.9%, representing a significant improvement over the PCE (1.1%) obtained from parent copolymer (P1). |
| 저자 |
박태호, 김관우, 이강영, 김홍일, 루비 라츠
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| 소속 |
POSTECH |
| 키워드 |
Benzene-end-group functionalization; Benzene-PC70BM interaction; Miscibility; Phase-separated morphology; Charge transport.
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| E-Mail |
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