| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-디스플레이 |
| 제목 | The Small Singlet Triplet Energy Gap in Multi-resonance Thermally Activated Delayed Fluorescence Emitter by Carbazole Moieties. |
| 초록 | Multi-resonancetype thermally activated delayed fluorescence (MR TADF),which has fast fluorescence decay and a narrow full width at half maximum (FWHM), has arelatively high singlet triplet energy gap (ΔEST), becauseof different mechanism from the donor acceptor (D-A) type TADF. We designed andsynthesized OLED materials with carbazole substituents in MR type TADF, whichshowed lower ΔEST,contributing to efficient RISC. all materials’ ΔEST werebelow 0.1 eV, and one of them showed a very small value of 0.02 eV. Thedevice A we fabricated using material 1 showed the maximum luminousefficiency, power efficiency, and external quantum efficiency of 25.0 cd/A,22.4 lm/W, 18.1 %, respectively. Also, it exhibited at 477 nm with FWHM 31 nm, CommissionInternationale d’Énclairage (CIE) coordinates of (0.109, 0.231). |
| 저자 | 문준영, 이준엽 |
| 소속 | 성균관대 |
| 키워드 | OLED; MR-TADF |
