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|
| Type |
Poster Presentation |
| Area |
공업화학 |
| Room No. |
포스터발표장 |
| Time |
4월 20일 (목요일) 11:00~12:30 |
| Code |
IND.P-5 |
| Subject |
Iridium(III) Complexes Containing N-heterocyclic Carbene Ligands for Blue Phosphorescent OLEDs |
| Authors |
김종훈, 강상욱, 손호진*
고려대학교 신소재화학과, Korea
|
| Abstract |
The combination of both very high brightness and deep blue emission from phosphorescent organic light-emitting diodes (PHOLED) is required for display and lighting applications, yet so far development of high performance blue phosphorescent OLEDs and related materials is still a challenging issue. Blue phosphorescent OLEDs are the most difficult to achieve high efficiency among three primary colors due to its limitation on the selection of materials satisfying the requirements of host materials and neighboring charge transporting materials with higher triplet energy than that of the blue emitter for efficient triplet confinement within emitter and the absence of electron/exciton blocking layers (EBL) that are compatible with the high triplet energy of the deep blue dopant and the high frontier orbital energies of hosts needed to transport charge. Here, we show that N-heterocyclic carbene (NHC) Ir(III) complexes can serve as both deep blue emitters and efficient hole-conducting EBLs. Our results represent an advance in blue-emitting PHOLED architectures and materials combinations that meet the requirements of many critical illumination applications. |
| E-mail |
worm1973@naver.com |
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119th General Meeting of the KCS