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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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