| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Photovoltaic Polymers with Noncovalent Confor-mational Lock, Showing over 9% Efficiency with Thermal Stability |
| 초록 |
We report a series of semi-crystalline low band gap (LBG) polymers and demonstrate the fabrication of highly efficient PSCs that simultaneously achieve power conversion efficiency (PCE) of over 7% and outstanding long-term thermal stability for 200 h at 130 °C. These excellent characteristics are closely related to the molecular structures where intra- and/or intermolecular noncovalent conformational lock assures strong interchain interactions without losing solution processability. The crystalline polymers form a well-distributed fibrillar networked morphology with PC70BM with an ideally balanced hole and electron mobility (with e/h mobility ratio of nearly 1 for PPDT2FBT:PC70BM). Furthermore, methanol treatment of the optimized devices demonstrated efficiency of over 9% (best of 9.39%) in a conventional single-cell device structure without any functional layer. |
| 저자 |
고서진1, Thanh Luan Nguyen2, 최효성1, 우한영2, 김진영1
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| 소속 |
1UNIST, 2부산대 |
| 키워드 |
polymer solar cells; bulk heterojuction; non-covalent bonding
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| E-Mail |
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