| 학회 |
한국고분자학회 |
| 학술대회 |
2016년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
41권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Controlling energy levels and blend morphology for high efficient all-polymer solar cells via fluorination of naphthalene diimide copolymer acceptor |
| 초록 |
Tuning the chemical structures of conjugated polymers by fluorination is a simple, yet powerful strategy for regulating their energy level and blend morphology between donor and acceptor. Herein, we investigate the effect of fluorination to P(NDI2OD-T2), the most generally used as acceptors in all-polymer solar cells (all-PSCs), on their photovoltaic properties. We developed all-PSCs based on PBDTTTPD as donor and P(NDI2OD-T2F) as acceptors, and examined their charge generation and recombination behaviors by TAS. These systems exhibit faster hole transports and longer polaron life time, and subsequently the high power conversion efficiency of 6.09%, compared with control devices using P(NDI2OD-T2) as acceptors (2.02%). Furthermore, higher miscibility of P(NDI2OD-T2F) with donors in blend films was also examined by AFM and R-SoXS. Therefore, we concluded that fluorination is effective strategy for high efficient all-PSCs due to deepening energy level and producing miscible morphology. |
| 저자 |
김영권1, Muhammad Afsar Uddin2, Robert Younts3, 이원호1, Bhoj Gautam3, 최준형1, Cheng Wang4, Kenan Gundogdu3, 우한영2, 김범준1
|
| 소속 |
1KAIST, 2고려대, 3North Carolina State Univ., 4Lawrence Berkeley National Laboratory |
| 키워드 |
All-polymer solar cell; NDI; Fluorination
|
| E-Mail |
|
