| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Low-Bandgap Polymer Nanowires for Highly Efficient Organic Solar Cells |
| 초록 |
Here, we report a simple and effective strategy for highly efficient polymer solar cells (PSC) using crystalline one-dimensional (1D) nanowires composed of a novel low-bandgap polymer. The donor polymer, PBDT2FBT-2EHO, which is characterized by intrinsically strong intra- and intermolecular interactions due to incorporated fluorine atoms and short alkyl chains, was newly synthesized to form 1D polymer nanowire (PNW) structures. The PNW-embedded bulk-heterojunction (BHJ) morphology of the photoactive layer, in combination with a PC71BM acceptor, was successfully developed by kinetically controlled film formation process through a simple mixing of binary solvent comprising chlorobenzene and 1-chloronaphthalene. By incorporating 1D polymer nanowires into bulk-heterojunction PSCs, the power conversion efficiency (PCE) dramatically increased from 5.2% to 8.2% with an excellent enhancement of photoconductivity in conventional single cell structures. |
| 저자 |
이재원, 조새벽, 김민, 김흥규, 신지수, 조길원
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| 소속 |
POSTECH |
| 키워드 |
polymer nanowires; low-bandgap polymer; organic solar cells
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| E-Mail |
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