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A Novel InGaN Blue Light-Emitting Diode with a Self-Textured Oxide Mask Structure

机译:具有自织构氧化物掩模结构的新型InGaN蓝光发光二极管

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摘要

A 460 nm InGaN/GaN blue light-emitting diode (LED) with a self-textured oxide mask (STOM) structure was fabricated and demonstrated. The design of the STOM on the GaN/sapphire substrate could be used to reduce the threading dislocation density in the epitaxial template and enhance the light extraction efficiency via the light scattering or deflection from the corrugated STOM. Under an injection current of 20 mA, the forward voltage of the STOM-LED and conventional LED (C-LED) was nearly identical at 3.41 V. Moreover, the leakage current of the STOM-LED was lower than the C-LED. Furthermore, the light output power of the STOM-LED was approximately 43% higher (at 20 mA) than the C-LED. This significant improvement was attributed to the enhanced light extraction via the STOM array.
机译:制作并演示了具有自织构氧化物掩模(STOM)结构的460 nm InGaN / GaN蓝色发光二极管(LED)。 GaN /蓝宝石衬底上STOM的设计可用于降低外延模板中的螺纹位错密度,并通过光从波纹状STOM散射或偏转来提高光提取效率。在注入电流为20 mA的情况下,STOM-LED和常规LED(C-LED)的正向电压在3.41 V时几乎相同。此外,STOM-LED的泄漏电流低于C-LED。此外,STOM-LED的光输出功率(在20 mA下)比C-LED高约43%。这项重大改进归因于通过STOM阵列增强了光提取。

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  • 来源
  • 会议地点 Montreal(CA);Montreal(CA)
  • 作者单位

    Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan, R.O.C;

    Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan, R.O.C,Department of Electrical Engineering, Da-Yeh University, Changhua 51591, Taiwan, R.O.C;

    Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan, R.O.C;

    Department of Materials Science and Engineering, National Chung Hsing University, Taichung 40227, Taiwan, R.O.C;

    Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan, R.O.C;

    Department of Electro-Optical Engineering, National Cheng Rung University, Tainan 70101, Taiwan, R.O.C;

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  • 正文语种 eng
  • 中图分类 材料;
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