| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 가을 (10/30 ~ 11/01, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
23권 2호 |
| 발표분야 |
포스터_디스플레이 |
| 제목 |
Direct Observation of Triplet Energy Transfer between Two Manager and Host Iridium Dopants in Blue PhOLED Device and Performance Optimization through Molecular Modification |
| 초록 |
We prepared phenylimidazole-based C^N-cyclometalated Ir(III) complexes (DMP, TPF2) and C^C-cyclometalated Ir(III) complex (PMP), and investigated the energy transfer(ET) process by examining the intermolecular interactions between the two cyclometalated Ir(III) complexes. In films doped with 3% PMP and 15% DMP or TPF2, the PMP effectively induced ET to the DMP or TPF2. This intermolecular ET process was investigated using a picosecond time-resolved emission spectroscopic method. In the case of mixing PMP with DMP, where two types of luminescence were observed at 470 nm and 580 nm, the emission at 470 nm was due to DMP, while the emission at 580 nm can be assigned as the intermolecular exciplex emission. By contrast, in the case of mixing PMP with TPF2, the emission at 465 nm corresponding to the PMP emission region decreased for 18.5 ns, while the emission at 530 nm corresponding to TPF2 increased. This emission can be attributed to the ET from PMP to TPF2. |
| 저자 |
나수원, 김진형, 백창현, 이대한, 김철훈, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
energytransfer; host; iridium dopant; dopant
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| E-Mail |
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