| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
대학원생 구두발표(토론I): 분자전자용 공액고분자 소재 및 소자의 미래 |
| 제목 |
Flexible-Spacer Incorporated Polymer Donors For High-Performance And Mechanically-Robust Polymer Solar Cells |
| 초록 |
Development of polymer solar cells with high photovoltaic performance and mechanical robustness is one of the foremost tasks for ensuring operational reliability and applicability into stretchable power generators of wearable devices. However, the approach to achieve both requirements still lacks due to the difficulty in enhancing mechanical stability without disrupting the electrical properties of active materials. Here, we develop novel polymer donors (PDs), interposing a flexible spacer (FS) into the backbone of PM6 through random terpolymerization. The controlled contents of FSs in PDs lead to highly miscible blend morphologies, which enable suppressed charge recombination and mechanical endurance from stress dissipation effect. Resultingly, the optimal PD affords superb power conversion efficiency of 17% with crack onset strain of 12%, surpassing those of PM6. This work demonstrates the promising strategy to overcome mechanical inferiority of state-of-the-art active blends. |
| 저자 |
정다현, 이진우, 김동준, Ngoc-Lan Tan Phan, 박진수, 김택수, 김범준
|
| 소속 |
한국과학기술원 |
| 키워드 |
polymer solar cell; polymer donor; non-fullerene small-molecule acceptor; mechanical robustness; high efficiency
|
| E-Mail |
|
