| 세션명 | 미래소재: 태양광 에너지 활용 소재 기술 |
|---|---|
| 발표장 | 제5회장 |
| 논문코드 | 1L5-2 |
| 발표일 | 2021-10-21 |
| 발표시간 | 14:25-14:50 |
| 논문제목 | Impact of Symmetry-Breaking of Non-Fullerene Acceptors for Efficient and Stable Organic Solar Cells |
| 발표자 | 김봉수 |
| 발표자 소속 | 울산과학기술원 |
| 저자 | 김봉수† |
| 소속 | 울산과학기술원 |
| 논문초록 | Here we report efficient and stable organic solar cells (OSCs) based on the asymmetric non-fullerene acceptor (NFA) IPC-BEH-IC2F. The NFA consists of the weak electron-donor core dithienothiophen[3.2-b]-pyrrolobenzothiadiazole (BEH) and two strong electron-acceptor (A) units [9H-indeno[1,2-b]pyrazine-2,3-dicarbonitrile (IPC) and 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC2F)]. For comparison, the symmetric IPC-BEH-IPC and IC2F-BEH-IC2F were also characterized. Photovoltaic devices based on p-type polymer:NFA blends with PBDB-T and PM6 polymers were fabricated. PBDB-T:IPC-BEH-IC2F device displayed the best photovoltaic properties because the IPC unit provides balanced electronic and morphological characteristics. Importantly, the PBDB-T:IPC-BEH-IC2F device exhibited the best long-term stability owing to the strongly interacting IPC moiety and the densely packed PBDB-T:IPC-BEH-IC2F film. |
THE POLYMER SOCIETY OF KOREA