| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Semi-Crystalline Photovoltaic Polymers with Noncovalent Conformational Lock, Showing over 9% Efficiency with Long-Term Thermal Stability |
| 초록 |
Despite recent remarkable progress in polymer solar cells (PSCs), the development of highly efficient and thermally stable PSCs have been challenging. Here, we report a series of semi-crystalline low band gap polymers and demonstrate the fabrication of highly efficient PSCs that simultaneously achieve power conversion efficiency 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. |
| 저자 |
최효성1, 고서진1, Thanh Luan Nguyen2, 우한영2, 김진영1
|
| 소속 |
1울산과학기술대, 2부산대 |
| 키워드 |
polymer solar cells; semi-crystalline polymers
|
| E-Mail |
|
