| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-디스플레이 |
| 제목 |
Iridium(III) N-Heterocyclic Carbene Complexes Incorporating Dibenzothiophene Derivative for Efficient Blue PhOLEDs: An Experimental and Theoretical Study of Structural, Spectroscopic, Electrochemical and Electroluminescence Properties |
| 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 |
PhOLEDs; Iridium complexes
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| E-Mail |
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