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An alternative composite electrode for efficient organic light-emitting diodes

机译：用于有效有机发光二极管的替代复合电极

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摘要

Considering a device structure consisting of multi-stacked layers with different refractive indices, we proposed a composite electrode to diminish total internal reflection, thereby improving the out-coupling efficiency of organic light-emitting diodes (OLEDs). The selected transparent conducting oxide materials for the composite electrode were composed of the same main material, gallium-doped zinc oxide (GZO), to avoid lattice mismatch and reduce interfacial strain. Herein, silicon-doped GZO (SGZO) with a relatively low refractive index was used in combination with molybdenum-doped GZO (MGZO) with a high work function to form a multifunctional transparent composite electrode. High transmittance of 94.5% and adequate sheet resistance of 52.3 Ohm/sq were realized through the design of SGZO/MGZO films on a glass substrate. The tested blue phosphorescent OLEDs with SGZO/MGZO composite anode outperformed devices with other selected single-layer electrodes, achieving a high peak efficiency of 29.0% (57.6 cd/A and 47.6 lm/W). These results demonstrate clear advantages of using this composite-electrode concept for realizing high efficiency OLEDs or other flexible optoelectronics.
机译：考虑到由具有不同折射率的多堆叠层组成的器件结构，我们提出了一种复合电极来减少全内反射的总体反射，从而提高有机发光二极管（OLED）的外耦合效率。用于复合电极的所选择的透明导电氧化物材料由相同的主要材料，掺杂掺杂的氧化锌（GZO）组成，以避免晶格失配并降低界面菌株。这里，具有相对低折射率的硅掺杂的GZO（SgZO）与钼掺杂的GZO（MgZo）组合使用，具有高功函数以形成多功能透明复合电极。通过在玻璃基板上设计SgZo / Mgzo膜，实现了94.5％的高透射率和52.3欧姆/平方英尺的足够薄层电阻。用SgZO / MgZo复合阳极的测试蓝磷光OLED具有与其他选定的单层电极相实的装置，实现高峰效率为29.0％（57.6cd / a和47.6升/倍）。这些结果表明了使用该复合电极概念实现高效OLED或其他柔性光电子的明显优点。

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  • 来源
    《Organic Electronics》 |2020年第10期|105844.1-105844.8|共8页
  • 作者

    Dian Luo; Tsung-Che Chiang; Chi-Hao Chan; Po-Chen Chiu; Hao-Hsuan Chiu; Chia-Hao Ku; Chih-Hao Chang; Jhih-Yan Guo; Shun-Wei Liu; Hai-Ching Su;

  • 作者单位

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan Institute of Lighting and Energy Photonics National Chiao Tung University Tainan 71150 Taiwan;

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan;

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan;

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan;

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan;

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan;

    Department of Electrical Engineering Yuan Ze University Taoyuan 32003 Taiwan;

    Department of Electronic Engineering Ming Chi University of Technology New Taipei City 24301 Taiwan;

    Department of Electronic Engineering Ming Chi University of Technology New Taipei City 24301 Taiwan;

    Institute of Lighting and Energy Photonics National Chiao Tung University Tainan 71150 Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Composite electrode; Organic light-emitting diode (OLED); Gallium-doped zinc oxide; Silicon-doped GZO (SGZO); Molybdenum-doped GZO (MGZO);

    机译：复合电极;有机发光二极管（OLED）;掺杂掺杂的氧化锌;硅掺杂的gzo（sgzo）;钼掺杂的gzo（mgzo）;

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