한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)
- 한국전기전자재료학회 2001년도 하계학술대회 논문집
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- Pages.178-181
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- 2001
인광물질 인 Ir(PPy)$_3$ 를 이용한 유기전기발광소자의 효율 개선에 관한 연구
A Study on the improvement in efficiencies of Organic-Light Emitting Devices Using the Phosphor, Ir(PPy)$_3$
초록
The organic light-emitting devices (OLEDs) based on fluorescence have low efficiencies due to the requirement of spin-symmetry conservation. By using the phosphorescent material, the internal quantum efficiency can reach 100 %, compared to 25 % in the case of the fluorescent material. Thus, the phosphorescent OLEDs have recently been extensively studied and showed higher internal quantum efficiencies then the conventional OLEDs. In this study, we investigated the characteristics of the phosphorescent OLEDs, with the green emitting phosphor, Ir(ppy)