| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Evaluating the Intrinsic Stability of Hole-Transporting Materials in Organic Light-Emitting Devices |
| 초록 |
Among organic layers in organic light-emitting devices (OLEDs), a hole-transporting layer (HTL) facilitates injection of hole carriers into an emitting layer. This process can be described as successive electrochemical oxidation of HTL molecules that mainly consist of aminoarenes. Although a variety of HTL materials have been developed to date, chemical mechanisms underlying their different stabilities remain unexplored. In this research, we have evaluated the electrochemical stability of fifteen HTL materials. The oxidation potential of the HTL material was carefully determined using cyclic and differential pulse voltammetry techniques. Our experiments revealed the high stability of the radical cation of HTL molecules having triarylamine moieties over those having a carbazole unit. Oxidative bulk electrolysis of the HTL compounds was performed to quantify the Faradaic yield for the electrochemical degradation. |
| 저자 |
강은솔, 최승희, 유영민
|
| 소속 |
이화여자대 |
| 키워드 |
OLED; degradation; hole transporting material
|
| E-Mail |
|
