| 학회 |
한국화학공학회 |
| 학술대회 |
2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 |
26권 1호, p.473 |
| 발표분야 |
에너지 환경 |
| 제목 |
Effective design of benzoselenadiazole core D-A-A small molecule for bulk heterojunction organic solar cells via alkyl bithiophene and 3,5-bis(trifluoromethyl)benzene terminal unit |
| 초록 |
A new asymmetric D-A-A type small organic chromophore named 4-(3,5-bis(trifluoromethyl)phenyl)-7-(5'-hexyl-[2,2'-bithiophen]-5-yl)benzo[c][1,2,5]selenadiazole (RT-BSe-F) based on central benzoselenadiazole (BSe) core was successfully synthesized by coupling reaction. Strong electron affinity of 3,5-bis(trifluoromethyl)benzene acceptor unit significantly tune the electrochemical features with aligned HOMO and LUMO anergy level of -5.33 and -3.31 eV. Fluorination enables the fast charge transfer owing to high mobility of RT-BSe-F and tempts absorption and photoluminescence behavior thus permit the better spectral overlap with solar spectrum. Bulk heterojunction (BHJ) organic devices fabricated with RT-BSe-F:PC60BM (1:2, w/w) achieved a high power conversion efficiency (PCE) of ~3.75% accredited to high Jsc of ~ 12.56 mA cm-2, Voc of ~0.71 V and FF of ~0.42. |
| 저자 |
압둘라, 김은비, 알람샤바즈, 모하마드임란, 아민사디아, 신형식
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