| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-에너지저장·변환 |
| 제목 | Burn-in free non-fullerene acceptor based organic photovoltaics processed with sequential deposition and quasi-orthogonal solvent. |
| 초록 | In this study, burn-in free OPV is demonstrated by utilizing sequential deposition (SqD) process and semi-orthogonal solvent. The semi-orthogonal solvent is composed of 1-chloronatphtalene (1-CN) and dichloromethane (DCM). The 1-CN improves swelling of the Y6 into amorphous domains of PBDB-T-2F. The PBDB-T-2F in the SqD processed film forms efficient bulk heterojunction (BHJ) with Y6 and exhibit higher crystallinity than that in blend solution deposition (BSD) processed film. The SqD processed OPV exhibit PCE of 13.2% and maintains 93.6% of its initial PCE after 80℃ thermal annealing for 140 hours, whereas the BSD processed OPV maintains 66.4% of its initial PCE. The conduction of Raman scattering, absorption spectra experiments reveal the BHJ morphology in the SqD film is very stable under the thermal stress. These results indicate that the degradation of conventional OPV is ascribed to the morphological instability of photoactive domains rather than the oxidation of Al electrode. |
| 저자 | 홍민정, 김현경, 이주환, 김경곤, 윤지예 |
| 소속 | 이화여자대 |
| 키워드 | burn-in free organic photovoltaic device. photoactive layer / electrode interface; non-fullerene acceptor; organic photovoltaic device stability |
