| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Control of Morphology in Bulk-Heterojunction Solar Cells via pi-pi Interaction |
| 초록 |
Herein, we report the miscibility of donor random copolymers with a fullerene acceptor through benzene-fullerene interaction and substantial effects on the morphology and performance of BHJ PSCs. In addition, we demonstrate such the concentration-dependent competitive interaction between benzene-benzene and benzene-fullerene. Therefore, the optimal ratio of 10:90 between M2 (10 mol%) and M3 (90 mol%) units in RP1 copolymer resulted in selective interactions with PC70BM due to the dominance of the benzene–PC70BM interactions over the benzene–benzene interactions. As a consequence, the dominant benzene–PC70BM interactions promoted the formation of nanoscale morphology in the RP1:PC70BM film. The BHJ device prepared using RP1 exhibited a PCE of 4.9%. |
| 저자 |
김홍일, Michael Ruby Raj, 이강영, 김관우, 박태호
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| 소속 |
POSTECH |
| 키워드 |
polymer solar cells; morphology; pi-pi interaction
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| E-Mail |
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