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首页> 外文期刊>Organic Electronics >High efficiency doping-free warm-white organic light-emitting diodes with strategic-tuning of radiative excitons by combining interfacial exciplex with multi-ultrathin emissive layers
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High efficiency doping-free warm-white organic light-emitting diodes with strategic-tuning of radiative excitons by combining interfacial exciplex with multi-ultrathin emissive layers

机译：通过将界面切除与多超高发光层相结合，具有高效掺杂的暖白色有机发光二极管，辐射激子的战略调整

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摘要

White organic light-emitting diodes (WOLEDs) have widely drawn attention for applications in flat panel display and solid-state lighting. High efficiency and simple device structure are two important factors for large-scale application for WOLEDs. Here, we have presented a relatively reliable method to develop high-performance and doping-free WOLEDs by integrating interfacial exciplex with phosphorescent multi-ultrathin emissive layers. By reasonable design of device architecture, the resulting WOLED with a warm-white light not only realizes a low turn-on voltage of 2.25 V, but also exhibits the high forward-viewing power efficiency and external quantum efficiency of 91.5 lmW~(-1) and 21.3%, respectively, without light out-coupling enhancement techniques. More importantly, the power efficiency still remain as high as 49.5 lm W~(-1) at the high luminance of 1000 cd m~(-2), which should be one of the best values in reported doping-free WOLEDs. It suggests that multi-ultrathin emissive layers combining with interfacial exciplex can realize the efficient utilization of excitons and improvement of efficiency roll-off.
机译：白色有机发光二极管（Woled）在平板显示器和固态照明中广泛地引起了应用的应用。高效率和简单的设备结构是用于磨损的大型应用的两个重要因素。在这里，我们介绍了一种相对可靠的方法，可以通过将界面Exciple与磷光多超超引发层与界面分泌物集成来发展高性能和掺杂的无汗水。通过合理设计设备架构，由暖白光的产生的磨损不仅实现了2.25 V的低开启电压，而且表现出高前进的功率效率和外部量子效率为91.5 lmw〜（-1分别为21.3％，没有轻微耦合的增强技术。更重要的是，在1000cd m〜（-2）的高亮度下，功率效率仍然高达49.5 LM W〜（-1），这应该是报告的无掺杂磨损中的最佳值之一。它表明，与界面切换的多相发光层组合可以实现激子的有效利用和提高效率滚降。

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  • 来源
    《Organic Electronics》 |2020年第10期|105876.1-105876.7|共7页
  • 作者

    Shian Ying; Yuwen Chen; Jingwen Yao; Qian Sun; Yanfeng Dai; Dezhi Yang; Xianfeng Qiao; Jiangshan Chen; Dongge Ma;

  • 作者单位

    College of Materials Science and Engineering Shandong University of Science and Technology Qingdao 266590 People's Republic of China Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

    Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materiak and Devices South China University of Technology Guangzhou 510640 People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    Interfacial exciplex; Ultrathin emissive layer; White organic light-emitting diodes; Doping-free device structure;

    机译：界面Exciplex;超薄发光层;白色有机发光二极管;无掺杂的装置结构;

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