| 학회 | 한국공업화학회 |
| 학술대회 | 2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 | 20권 1호 |
| 발표분야 | 디스플레이_포스터 |
| 제목 | NEW UP-CONVERSION BLUE MATERIAL FOR HIGH EXTERNAL QUANTUM EFFICIENCY IN THERMALLY ACTIVATED DELAYED FLUORESCENCE DEVICE |
| 초록 | The azasiline unit was introduced for the first time as the donor moiety to synthesize a new deep blue TADF dye, DTPDDA. The azasiline unit was separated spatially from the acceptor of triazine owing to the large dihedral angle formed at the nitrogen−carbon bridge. Replacing the carbon connection by a silicon connection widens the bandgap suitable for blue emission. An efficient blue fluorescent OLED with the CIE coordinates of (0.149, 0.197) was fabricated with an unprecedented high EQE of 22.3% and low efficiency roll-off by doping DTPDDA in a mixed cohost system of mCP:TSPO1. Theoretical prediction assuming the fraction of radiative exciton as unity agrees well with EQE indicating efficient harvest of triplets occurring in DTPDDA through RISC. |
| 저자 | 백장열1, 선진원2, 박정훈1, 안은수1, 김장주2, 김윤희1 |
| 소속 | 1경상대, 2서울대 |
| 키워드 | OLED; TADF |
