| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-디스플레이 |
| 제목 |
Rational Design and Characterization of NHC-Iridium(III) Complexes Based on Triazolophenanthridine for Highly Efficient Blue PhOLEDs |
| 초록 |
Ir(Phenyl), Ir(Tolyl), and Ir(Xylenyl) were isolated, and investigation of their photophysical properties was carried out. The crystal structures of Ir complexes were determined, and it was found that the meridional isomer of Ir(Phenyl) was not formed but hetero-Ir(Phenyl) was formed. In the case of homoleptic complexes, orbitals are located in the metal and phenyl part of phenanthridine in HOMO, and in the entire phenanthridine in LUMO. Hetero-Ir(Phenyl) has orbital distribution extended to the phenyl moiety, where the HOMO is located in the metal and phenyl moiety, and LUMO is located in the phenanthridine. The energy of hetero-Ir(Phenyl) was stabilized and red-shifted emission. Ir complexes were applied to PHOLED and the fabricated device exhibited efficient blue emission. Hetero-Ir(Phenyl) showed relatively higher efficiency with an external quantum efficiency (EQE) of up to 16.2%. Similar to the properties in the solvent, the facial isomer was closer to the deep-blue emission. |
| 저자 |
이상훈, 최민수, 서윤정, 윤보선, 김진형, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
PhOLEDs; Iridium complexes
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| E-Mail |
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