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首页> 外文期刊>Journal of Crystal Growth >Bi incorporation in GaAs(100)-2 × 1 and 4 × 3 reconstructions investigated by RHEED and STM
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Bi incorporation in GaAs(100)-2 × 1 and 4 × 3 reconstructions investigated by RHEED and STM

机译:通过RHEED和STM研究了GaAs(100)-2×1和4×3重建中的Bi掺入

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摘要

Bi acts as a surfactant in molecular beam epitaxy (MBE) growth on GaAs(100). Incorporation is achieved by disequilibrium at growth temperatures below -450 ℃. Bi can however affect the static reconstruction up to 600 ℃. Two reconstructions are considered in this work: dynamic (2 × 1) and static c(8 × 3)/ (4 × 3), which are shown to be the dominant reconstructions for GaAsBi MBE. Bi storage in these two reconstructions provides an explanation of RHEED transitions that cause unintentional Bi incorporation in the GaAs capping layer. Finally dynamic observations of the (2 × 1) reconstruction are used to explain growth dynamics, atomic ordering and clustering observed in GaAsBi epilayers which have a direct influence on photoluminescence linewidth broadening in mixed anion III-V alloys.
机译:Bi在GaAs(100)上的分子束外延(MBE)生长中充当表面活性剂。掺入是通过在低于-450℃的生长温度下实现不平衡来实现的。然而,Bi可以影响高达600℃的静态重建。在这项工作中考虑了两个重构:动态(2×1)和静态c(8×3)/(4×3),它们被证明是GaAsBi MBE的主要重构。这两个重建中的Bi储存提供了对RHEED跃迁的解释,该RHEED跃迁会导致在GaAs覆盖层中意外引入Bi。最后,对(2×1)重构的动态观察用于解释在GaAsBi外延层中观察到的生长动力学,原子有序化和聚集,这直接影响了混合阴离子III-V合金的光致发光线宽加宽。

著录项

  • 来源
    《Journal of Crystal Growth》 |2012年第1期|p.19-23|共5页
  • 作者单位

    University of Sheffield, Department of Electronic and Electrical Engineering, Mappin Street, Sheffield SI 3JD, United Kingdom;

    University of Sheffield, Department of Electronic and Electrical Engineering, Mappin Street, Sheffield SI 3JD, United Kingdom;

    University of Sheffield, Department of Electronic and Electrical Engineering, Mappin Street, Sheffield SI 3JD, United Kingdom;

    Advanced Technology Institute and Department of Physics, University of Surrey, Guildford, Surrey CU2 7XH, United Kingdom;

  • 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. Crystal Morphology; A1. Scanning tunnelling microscopy; A3. Molecular beam epitaxy; B1. Bismuth compounds;

    机译:A1。晶体形态A1。扫描隧道显微镜A3。分子束外延;B1。铋化合物;

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