| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ |
| 제목 |
Homoleptic Cyclometalated Dibenzothiophene-NHC-Iridium(III) Complexes for Efficient Blue Phosphorescent Organic Light-Emitting Diodes |
| 초록 |
The NHC-Ir complexes f-IrSiPr, m-IrSiPr, and m-IrSMe, in which a dibenzothiophene (DBT) moiety is used to increase the emission efficiency for deep blue phosphorescence, were synthesized and compared with the dibenzofuran (DBF)-based Ir complexes f-IrOMe and m-IrOMe. The differences in the ligand structure (DBF/DBT) or configuration (fac/mer) of these complexes led to different electrochemical and photophysical properties. Even with the differences in the origin of phosphorescence, replacement of the oxygen atom in the DBF unit with sulfur does not greatly alter the emission efficiency in either solution or film, while achieving the same high-end deep-blue phosphorescence with unprecedented CIE coordinates of [0.14,0.19] for m-IrSMe (EQEmax; 17.1%) and [0.14,0.14] for m-IrOMe (EQEmax; 18.2%). |
| 저자 |
이상훈, 최민수, 서윤정, 윤보선, 김소연, 김진형, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
Blue Phosphorescent; NHC-Ir complexes
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| E-Mail |
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