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Improved Device Performances in Phosphorescent Organic Light-Emitting Diodes by Microcavity Effects
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- Authors
- Chul Woong Joo, Jaehyun Moon, Joohyun Hwang, Jun-Han Han, Jin-Wook Shin, Doo-Hee Cho, Jin Woo Huh, Hye Yong Chu, Jeong-Ik Lee
- Issue Date
- 2012-09
- Citation
- Japanese Journal of Applied Physics, v.51, no.9S2, pp.1-4
- ISSN
- 0021-4922
- Publisher
- Japan Society of Applied Physics (JSAP),
- Language
- English
- Type
- Journal Article
- Abstract
- In order to improve the external quantum efficiency of organic light-emitting diodes (OLEDs), we purpose an anode which has a structure of indium tin oxide (ITO)/Ag/ITO, in which the Ag layer has a function of micro-cavity inducing reflector. In order to maximize the microcavity effect the thicknesses of the hole transport layers of blue and red phosphorescent OLEDs (PhOLEDs) were deduced using simulations. By the use of our optically designed anode, it was possible to achieve approximately 50% improvements in the external quantum efficiency.
- KSP Keywords
- Ag layer, External Quantum Efficiency, Microcavity effect, Organic light-emitting diodes(OLEDS), Red phosphorescent, hole transport layer, indium tin oxide(ITO), light-emitting diode(LED), phosphorescent OLED, phosphorescent organic light-emitting diodes