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首页> 外文期刊>Organic Electronics >Polarized phosphorescent organic light-emitting devices adopting mesogenic host-guest systems
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Polarized phosphorescent organic light-emitting devices adopting mesogenic host-guest systems

机译：采用介晶主客体系统的偏振磷光有机发光器件

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摘要

We report successful realization of workable polarized phosphorescent organic light-emitting devices (OLEDs) by combining a recently developed mesogenic phosphorescent Pt(Ⅱ) complex and a mesogenic oligofluorene host to form the corresponding mesogenic host-guest emitting system. In the host-guest film, the mesogenic Pt(Ⅱ) complex tends to aggregate and self-assemble into the columnar stacking arrangement, exhibiting metal-metal-to-ligand charge transfer (MMLCT) emission of the Pt(Ⅱ) complex. Both the host molecules and guest aggregates in the host-guest films were successfully aligned by using the rubbed conducting polymer as the alignment layer. With such aligned host-guest films, polarized red-emitting OLEDs were successfully implemented, showing an EL polarization ratio of ~2, a maximal brightness exceeding 2000 cd/m2, and a cd/A efficiency up to 2.4 cd/A. Due to the particular alignment mechanism of guest aggregates and the unique MMLCT emission mechanism, the polarized OLED exhibiting stronger electroluminescence perpendicular to the rubbing direction than along the rubbing direction.
机译：我们报告通过结合最近开发的介晶磷光Pt（Ⅱ）配合物和介晶低聚芴主体，形成相应的介晶主体-客体发射系统，成功实现了可行的偏振偏振磷光有机发光器件（OLED）。在客体膜中，介晶Pt（Ⅱ）配合物趋于聚集并自组装成柱状堆叠排列，表现出Pt（Ⅱ）配合物的金属-金属-配体电荷转移（MMLCT）发射。通过使用摩擦的导电聚合物作为取向层，主体-客体膜中的主体分子和客体聚集体均被成功地对准。利用这种取向的主客体膜，成功实现了偏光的红色发光OLED，其EL偏振比约为2，最大亮度超过2000 cd / m2，并且cd / A效率高达2.4 cd / A。由于客体聚集体的特定排列机制和独特的MMLCT发射机制，偏振OLED在垂直于摩擦方向的方向上显示出比沿着摩擦方向更强的电致发光。

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  • 来源
    《Organic Electronics》 |2011年第1期|p.15-21|共7页
  • 作者

    Su-Hao Liu; Ming-Shiang Lin; Li-Yin Chen; Yun-Hua Hong; Chih-Hung Tsai; Chung-Chih Wu; Anurach Poloek; Yun Chi; Chien-An Chen; Shaw H. Chen; Hsiu-FuHsu;

  • 作者单位

    Department of Electrical Engineering, Graduate Institute of Electronics Engineering, and Graduate Institute of Photonics and Optoelectronics,National Taiwan University, Taipei 10617, Taiwan, ROC;

    Department of Electrical Engineering, Graduate Institute of Electronics Engineering, and Graduate Institute of Photonics and Optoelectronics,National Taiwan University, Taipei 10617, Taiwan, ROC;

    Department of Electrical Engineering, Graduate Institute of Electronics Engineering, and Graduate Institute of Photonics and Optoelectronics,National Taiwan University, Taipei 10617, Taiwan, ROC;

    Department of Electrical Engineering, Graduate Institute of Electronics Engineering, and Graduate Institute of Photonics and Optoelectronics,National Taiwan University, Taipei 10617, Taiwan, ROC;

    Department of Electrical Engineering, Graduate Institute of Electronics Engineering, and Graduate Institute of Photonics and Optoelectronics,National Taiwan University, Taipei 10617, Taiwan, ROC;

    Department of Electrical Engineering, Graduate Institute of Electronics Engineering, and Graduate Institute of Photonics and Optoelectronics,National Taiwan University, Taipei 10617, Taiwan, ROC;

    Chemistry Department, National Tsing-Hua University, Hsin-Chu 30013, Taiwan, ROC;

    Chemistry Department, National Tsing-Hua University, Hsin-Chu 30013, Taiwan, ROC;

    Chemical Engineering Department, Rochester University, Rochester, New York, 14623-1212, USA;

    Chemical Engineering Department, Rochester University, Rochester, New York, 14623-1212, USA;

    Chemistry Department, Tamkang University, Taipei 25137, Taiwan, ROC;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    OLEDs; phosphorescence; polarized emission; liquid crystal;

    机译：OLED;磷光;偏振发射;液晶;

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