Temperature-dependent Photoresponsivity Observed in Mg-doped p-InN Layers

FENG Li

doi:10.3788/fgxb20123307.0785

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Temperature-dependent Photoresponsivity Observed in Mg-doped p-InN Layers

更新时间：2020-08-12

- Temperature-dependent Photoresponsivity Observed in Mg-doped p-InN Layers
- Chinese Journal of Luminescence Vol. 33, Issue 7, Pages: 785-789(2012)
- 作者机构：
  
  北京大学物理学院北京,100871
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123307.0785
  CLC： O472.3
- Received：26 April 2012，
  
  Revised：30 May 2012，
  
  Published Online：10 July 2012，
  
  Published：10 July 2012
- 稿件说明：
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冯丽. 温度对p-InN薄膜光电导灵敏度的影响[J]. 发光学报, 2012,33(7): 785-789

FENG Li. Temperature-dependent Photoresponsivity Observed in Mg-doped p-InN Layers[J]. Chinese Journal of Luminescence, 2012,33(7): 785-789
冯丽. 温度对p-InN薄膜光电导灵敏度的影响[J]. 发光学报, 2012,33(7): 785-789 DOI： 10.3788/fgxb20123307.0785.

FENG Li. Temperature-dependent Photoresponsivity Observed in Mg-doped p-InN Layers[J]. Chinese Journal of Luminescence, 2012,33(7): 785-789 DOI： 10.3788/fgxb20123307.0785.

摘要

研究了p型InN的光电导效应。利用分子束外延技术(MBE)法生长出高质量的InN薄膜

在此基础上利用Mg掺杂获得了p-InN。原位反射高能电子衍射(RHEED)表明样品在生长过程中保持二维生长模式

原子力显微镜(AFM)测试结果显示台阶流的生长模式。实验发现

p型InN的光电导灵敏度随温度的升高而降低。其主要原因是当温度升高时

光生载流子浓度降低和样品背景浓度升高共同造成的。

Abstract

We reported the photoconductivity of Mg-doped p-InN layers

which were grown by molecular beam epitaxy (MBE). The surface of these samples was very flat which were observed by both reflection high energy electron diffraction (RHEED) and atomic force microscope (AFM). We studied the temperature-dependent photoconductivity of Mg-doped p-InN layers. We found out that the photosensitivity decreased with increasing temperature

which resulted from both the variation of photon-generated carrier concentration and the residual carrier concentration with increasing temperature.

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references

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