Improved White Organic Light-Emitting Devices with Dual-Emission-Layer Design
Wei-Chou Hsu1Ying-Nan Lai1Ching-Sung Lee2Su-Wei Yen1Wen-Feng Lai1Wen-Hsuan Lai1
1. Institute of Microelectronics,Department of Electrical Engineering,National Cheng Kung University2. Department of Electronic Engineenng,Feng Chia University
摘要：<正>In this work,approaches to improve current efficiency of white organic light-emitting diodes（WOLEDs） with high color purity have been studied.The emission layer in devices consists of 2-（t-butyl）-9,10-bis（2’ -naphthyl）anthracene（TBADN） blue host and 5,6,11,12-tetraphenylnaphthacene（rubrene） yellow dopant.The efficiency can be enhanced by using architecture of dual emission layers and hole-blocking layer.However,obvious yellow-shift emission occurs due to the small energy barrier between layers.The yellow-shift phenomenon is mitigated by modifying emission layers.The highest current efficiency of WOLED is 6.43 cd/A,which is greater by 51%than the device with single emission layer.The Commission Internationale de l’Eclairage（CIE） coordinates of（0.33, 0.33） exhibits high color purity in WOLEDs.
会议名称：
2008 9th International Conference on Solid-State and Integrated-Circuit Technology
会议时间：
2008-10-20
会议地点：
中国北京
- 专辑：
电子技术及信息科学
- 专题：
无线电电子学
- 分类号：
TN383.1
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