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首页> 外文期刊>Applied Physics Letters >All-optical measurement of vertical charge carrier transport in mid-wave infrared InAs/GaSb type-Ⅱ superlattices
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All-optical measurement of vertical charge carrier transport in mid-wave infrared InAs/GaSb type-Ⅱ superlattices

机译：中波红外InAs / GaSbⅡ型超晶格中垂直载流子传输的全光测量

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摘要

Time-resolved differential transmission measurements were used to investigate vertical charge carrier transport in mid-wave infrared InAs/GaSb type-Ⅱ superlattices (T2SLs). By optically generating excess carriers near one end of the mid-wave T2SL and measuring the transit time to a thin, lower-bandgap T2SL at the other end, the time-of-flight of vertically diffusing carriers was measured. Through investigation of both unintentionally doped and p-type T2SLs, the vertical hole and electron diffusion coefficients were measured to be 0.04 ± 0.03 cm~2/s and 4.7 ± 0.5 cm~2/s, corresponding to vertical mobilities of 6 ± 5 cm~2/Vs and 700 ± 80 cm~2/Vs, respectively, at a temperature of 77 K.
机译：利用时间分辨差分传输方法研究了中波红外InAs / GaSbⅡ型超晶格（T2SLs）中的垂直载流子传输。通过在中波T2SL的一端附近光学生成多余的载流子，并测量到另一端的窄带隙低T2SL的传输时间，可以测量垂直扩散载流子的飞行时间。通过研究无意掺杂和p型T2SL，垂直空穴和电子扩散系数测得分别为0.04±0.03 cm〜2 / s和4.7±0.5 cm〜2 / s，对应于6±5 cm的垂直迁移率在77 K的温度下分别为〜2 / Vs和700±80 cm〜2 / Vs。

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  • 来源
    《Applied Physics Letters》 |2013年第20期|202101.1-202101.4|共4页
  • 作者

    B. V. Olson; L M. Murray; J. P. Prineas; M. E. Flatte; J. T. Olesberg; T. F. Boggess;

  • 作者单位

    Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA;

    Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA;

    Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA;

    Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA;

    Department of Chemistry and Optical Science and Technology Center, University of Iowa, Iowa City,Iowa 52242, USA;

    Department of Physics and Astronomy and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242, USA;

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