| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Nonlinear Compositional Dependence of Photovoltaic Behavior via Bridging and Trapping Effects in Ternary Polymer Solar Cells Based on Fullerene Mono- and Tris-adducts |
| 초록 |
Fullerene tris-adducts have the potential of achieving high VOC in BHJ PSCs, because their LUMO is higher than those of fullerene mono- and bis-adducts. However, no successful examples of the use of fullerene tris-adducts as electron acceptors have been reported. Herein, we developed a ternary-blend approach for the use of fullerene tris-adducts to fully exploit the merit of their high LUMO level. The o-xylenyl C60 tris-adduct (OXCTA) was used as a ternary acceptor in the model system of P3HT as the electron donor and the two soluble fullerene acceptors of OXCTA and fullerene mono-adduct. When WOXCTA is small (＜0.3), OXCTA can generate a synergistic bridging effect between P3HT and the fullerene mono-adduct, which facilitates the charge transfer at the P3HT:fullerene interface, thereby leading to simultaneous enhancement in both VOC and JSC. But, interestingly, for WOXCTA＞0.7, both VOC and PCE of the ternary-blend PSCs exhibited non-linear compositional dependence on WOXCTA. |
| 저자 |
강현범1, 김기현1, 강태의1, 조철희1, 박선희1, 윤성철2, 김범준1
|
| 소속 |
1KAIST, 2KRICT |
| 키워드 |
fullerene tris-adduct; ternary-blend; polymer solar cell; charge transfer bridge; charge trapping
|
| E-Mail |
|
