中国物理B ›› 2015, Vol. 24 ›› Issue (10): 107704-107704.doi: 10.1088/1674-1056/24/10/107704

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

C–H complex defects and their influence in ZnO single crystal

谢辉, 赵有文, 刘彤, 董志远, 杨俊, 刘京明   

  1. Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional SemiconductorMaterials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • 收稿日期:2015-03-30 修回日期:2015-05-04 出版日期:2015-10-05 发布日期:2015-10-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61474104).

C–H complex defects and their influence in ZnO single crystal

Xie Hui (谢辉), Zhao You-Wen (赵有文), Liu Tong (刘彤), Dong Zhi-Yuan (董志远), Yang Jun (杨俊), Liu Jing-Ming (刘京明)   

  1. Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional SemiconductorMaterials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
  • Received:2015-03-30 Revised:2015-05-04 Online:2015-10-05 Published:2015-10-05
  • Contact: Zhao You-Wen E-mail:zhaoyw@semi.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61474104).

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摘要： Infrared absorption local vibration mode (LVM) spectroscopy is used to study hydrogen related defects in n-type ZnO single crystal grown by a closed chemical vapor transport (CVT) method under Zn-rich growth conditions, in which carbon is used as a transport agent. Two C-H complex related absorption peaks at 2850 cm-1 and 2919 cm-1 are detected in the sample. The formation of the C-H complex implies an effect of carbon donor passivation and formation suppression of H donor in ZnO. The influence of the complex defects on the electrical property of the CVT-ZnO is discussed based on Hall measurement results and residual impurity analysis.

关键词: ZnO, defects, infrared absorption, local vibrational mode (LVM)

Abstract: Infrared absorption local vibration mode (LVM) spectroscopy is used to study hydrogen related defects in n-type ZnO single crystal grown by a closed chemical vapor transport (CVT) method under Zn-rich growth conditions, in which carbon is used as a transport agent. Two C-H complex related absorption peaks at 2850 cm-1 and 2919 cm-1 are detected in the sample. The formation of the C-H complex implies an effect of carbon donor passivation and formation suppression of H donor in ZnO. The influence of the complex defects on the electrical property of the CVT-ZnO is discussed based on Hall measurement results and residual impurity analysis.

Key words: ZnO, defects, infrared absorption, local vibrational mode (LVM)

中图分类号:  (ZnO)

  • 77.55.hf
91.60.Ed (Crystal structure and defects, microstructure) 07.57.Hm (Infrared, submillimeter wave, microwave, and radiowave sources) 63.20.Pw (Localized modes)