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首页> 外文期刊>Physica, B. Condensed Matter >Effect of growth temperature on surface morphology and optical properties of undoped Al0.32Ga0.68As
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Effect of growth temperature on surface morphology and optical properties of undoped Al0.32Ga0.68As

机译：生长温度对未掺杂Al0.32Ga0.68as表面形态和光学性质的影响

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摘要

Undoped Al0.32Ga0.68As material which was grown by metal-organic chemical vapor deposition at different growth temperature. The evolution mechanism of surface morphology of Al0.32Ga0.68As was explained by the variation of step growth direction and growth rate, which were affected by growth temperature. Electrochemical capacitance-voltage results showed the dependence of conductivity type on carbon incorporation. Al0.32Ga0.68As changed from p-type to n-type conductivity and carrier concentration decreased as growth temperature increased from 640 degrees C to 740 degrees C. The disorder of Al0.32Ga0.68As ternary alloy originated from its structural defects, which were attributed to aluminum (Al) compositional fluctuations by the incorporation of carbon impurity. The crystal quality of undoped Al0.32Ga0.68As was characterized by the intensity of Fermi-edge singularity peak. The change rule of the intensity of Al0.32Ga0.68As and GaAs peaks was discussed in terms of carrier transport and recombination properties.
机译：未掺杂Al0。32Ga0。在不同的生长温度下，用金属有机化学气相沉积法生长了68As材料。Al0表面形貌的演化机制。32Ga0。68As可以用生长温度对生长方向和生长速率的影响来解释。电化学电容-电压结果表明，导电类型与碳的掺入有关。Al0。32Ga0。随着生长温度从640℃升高到740℃，68As的电导率由p型变为n型，载流子浓度降低。32Ga0。68As三元合金起源于其结构缺陷，这是由于掺入碳杂质导致铝（Al）成分波动所致。未掺杂Al0的晶体质量。32Ga0。68As的特征是费米边缘奇异峰的强度。Al0强度的变化规律。32Ga0。从载流子输运和复合性质的角度讨论了68As和GaAs峰。

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  • 来源
    《Physica, B. Condensed Matter》 |2021年第1期|共8页
  • 作者

    Dong Hailiang; Jia Tiantian; Jia Zhigang; Liang Jian; Liu Xuguang; Xu Bingshe;

  • 作者单位

    Taiyuan Univ Technol Key Lab Interface Sci &

    Engn Adv Mat Minist Educ Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Key Lab Interface Sci &

    Engn Adv Mat Minist Educ Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Key Lab Interface Sci &

    Engn Adv Mat Minist Educ Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Coll Mat Sci &

    Engn Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Inst New Carbon Mat Taiyuan 030024 Shanxi Peoples R China;

    Taiyuan Univ Technol Key Lab Interface Sci &

    Engn Adv Mat Minist Educ Taiyuan 030024 Shanxi Peoples R China;

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

    Surface morphology; Optical properties; Al0.32Ga0.68As; Growth temperature;

    机译：表面形态;光学性质;Al0。32Ga0。68As;生长温度;

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