| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Blue Phosphorescent Organic Light Emitting Diodes using an Exciplex Forming Co-host with the External Quantum Efficiency of Theoretical Limit |
| 초록 |
We report a high efficiency blue organic light emitting diode (OLED) approaching the theoretical efficiency using an exciplex forming co-host and Iridium(III)bis[(4,6-difluorophenyl)-pyridinato-N,C2′]picolinate (FIrpic) as a emitter. The OLED showed an external quantum efficiency of 29.5% (a maximum current efficiency of 62.2 cd A-1, and the power efficiency of 55.4 lm W-1), which agrees very well with the theoretical prediction based on the perfect electron and hole balance, the measured photoluminescent quantum yield and orientation of the transition dipole moment of FIrpic. OLED also exhibited a low driving voltage of 3 V and low efficiency roll-off. |
| 저자 |
신현, 이성훈, 김권현, 문창기, 유승준, 이정환, 김장주
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