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首页> 外文期刊>Journal of Crystal Growth >Fabrication of GaN structures with embedded network of voids using pillar patterned GaN templates
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Fabrication of GaN structures with embedded network of voids using pillar patterned GaN templates

机译:使用柱状图案化GaN模板制造具有嵌入式空隙网络的GaN结构

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摘要

In this paper we report on the MOCVD growth and characterization of GaN structures and InGaN single quantum wells grown on pillar patterned GaN/sapphire templates. During the regrowth a network of voids was intentionally formed at the interface of sapphire substrate and GaN epitaxial layer. The regrowth process was found to decrease the threading dislocation density of the overgrown layer. The quantum well sample grown on patterned template showed significantly higher optical output in photoluminescence measurements compared to the reference sample with identical internal quantum efficiency characteristics. We attribute the increase to enhanced light extraction efficiency caused by strong scattering and redirection of light from the scattering elements.
机译:在本文中,我们报道了MOCVD的生长以及在柱状GaN /蓝宝石模板上生长的GaN结构和InGaN单量子阱的表征。在再生长期间,有意在蓝宝石衬底和GaN外延层的界面处形成了空隙网络。发现长生过程降低了长满植物层的螺纹位错密度。与具有相同内部量子效率特性的参考样品相比,在图案化模板上生长的量子阱样品在光致发光测量中显示出明显更高的光输出。我们将增加归因于强散射和来自散射元件的光重定向导致的提高的光提取效率。

著录项

  • 来源
    《Journal of Crystal Growth》 |2013年第1期|42-45|共4页
  • 作者单位

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

    Aalto University, School of Electrical Engineering, Department of Micro and Nanosciences, Tietotie 3, 02150 Espoo, Finland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A1. defects; A1. etching; A3. MOCVD; A3. selective epitaxy; B1. nitrides;

    机译:A1。缺陷A1。蚀刻A3。 MOCVD;A3。选择性外延B1。氮化物;

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