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Dramatic efficiency improvement in single-layer orange phosphorescent organic light-emitting devices with suppressed efficiency roll-off

机译：单层橙色磷光有机发光器件的巨大效率改进，抑制效率滚降

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摘要

We have successfully demonstrated efficient single-layer organic light-emitting devices (OLEDs) with a current efficiency of 31.38 cd A(-1). The efficiencies still remain as high as 31.36 cd A(-1), 30.76 cd A(-1) and 29.98 cd A(-1) at the luminance of 1000 cd m(-2), 5000 cd m(-2) and 10 000 cd m(-2). The key feature of the device concept is uniformly doping iridium-bis-(4,6-difluorophenyl-pyridinato-N,C2)-picolinate (FIrPic) into a single organic layer to balance the transport of charge carriers. To better understand the mechanism of single-layer OLEDs, the position of the recombination zone and the influence of FIrPic on the transport properties are also studied in detail. Our work clearly reveals that the performance of the single-layer OLEDs can be dramatically improved by intentionally doping with a phosphorescent dye to balance the transport of charge carriers. This novel and versatile device concept provides a promising simple method to achieve high performance single-layer OLEDs.
机译：我们已经成功地证明了高效的单层有机发光器件（OLED），电流效率为31.38CDa（-1）。效率仍然高达31.36℃，30.76cd A（-1）和29.98cd A（-1），在1000cd m（-2），5000cd m（-2）和5000cd 10 000cd m（-2）。器件概念的关键特征是将铱 - 双（4,6-二氟苯基 - 吡啶-N，C2）均匀地掺杂到单个有机层中以平衡电荷载体的运输。为了更好地理解单层OLED的机制，还详细研究了重组区的位置和FIRPIC对运输性能的影响。我们的工作清楚地表明，通过有意掺杂磷光染料来平衡电荷载体的运输，可以显着改善单层OLED的性能。这种新颖和多功能的装置概念提供了实现高性能单层OLED的有希望的简单方法。

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  • 来源
    《RSC Advances》 |2016年第60期|共5页
  • 作者

    Zuo Liangmei; Han Guangguang; Sheng Ren; Xue Kaiwen; Duan Yu; Chen Ping; Zhao Yi;

  • 作者单位

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

    Jilin Univ Coll Elect Sci &

    Engn State Key Lab Integrated Optoelect Changchun 130023 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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