한국정보디스플레이학회:학술대회논문집
- 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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- Pages.454-457
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- 2008
The study of new host materials for solution-processed green organic electrophosphorescence
- Jung, Sung-Hyun (Cheil Industries Inc.) ;
- Lee, Ho-Jae (Cheil Industries Inc.) ;
- Kim, Young-Hoon (Cheil Industries Inc.) ;
- Kim, Hyung-Sun (Cheil Industries Inc.) ;
- Yu, Eun-Sun (Cheil Industries Inc.) ;
- Chae, Mi-Young (Cheil Industries Inc.) ;
- Chang, Tu-Won (Cheil Industries Inc.)
- 발행 : 2008.10.13
초록
We report the syntheses, photophysical properties and device performances of solution processible host material for green-phosphorescent OLEDs. The butterfly-shaped new host materials with nonconjugated linkage of carbazole and fluorene moieties have large triple energy band gap around 2.8 eV. All of the EL devices exhibited turn-on voltages in the range of 4.8-5.0 V. GH-4 exhibited the best performance with a maximum current efficiency and power efficiency of 21.1 cd/A and 7.9 lm/W.