›› 2015, Vol. 24 ›› Issue (2): 26802-026802.doi: 10.1088/1674-1056/24/2/026802

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effect of the thickness of InGaN interlayer on a-plane GaN epilayer

王建霞a b, 汪连山a, 张谦b, 孟祥岳b, 杨少延a, 赵桂娟a, 李辉杰a, 魏鸿源a, 王占国a   

  1. a Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    b Patent Examination Cooperation Center of the Patent Office, SIPO, Henan, Zhengzhou 450000, China
  • 收稿日期:2014-06-20 修回日期:2014-09-09 出版日期:2015-02-05 发布日期:2015-02-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 91233111, 61274041, and 11275228), the Special Funds for Major State Basic Research Project of China (Grant No. 2012CB619305), the National High Technology R & D Program of China (Grant Nos. 2014AA032603 and 2014AA032609), and the Guangdong Provincial Special Fund for LED Industrial Development, China (Grant No. 2012A080302003).

Effect of the thickness of InGaN interlayer on a-plane GaN epilayer

Wang Jian-Xia (王建霞)a b, Wang Lian-Shan (汪连山)a, Zhang Qian (张谦)b, Meng Xiang-Yue (孟祥岳)b, Yang Shao-Yan (杨少延)a, Zhao Gui-Juan (赵桂娟)a, Li Hui-Jie (李辉杰)a, Wei Hong-Yuan (魏鸿源)a, Wang Zhan-Guo (王占国)a   

  1. a Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
    b Patent Examination Cooperation Center of the Patent Office, SIPO, Henan, Zhengzhou 450000, China
  • Received:2014-06-20 Revised:2014-09-09 Online:2015-02-05 Published:2015-02-05
  • Contact: Wang Jian-Xia, Wang Lian-Shan E-mail:jxwang2009@semi.ac.cn;ls-wang@semi.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 91233111, 61274041, and 11275228), the Special Funds for Major State Basic Research Project of China (Grant No. 2012CB619305), the National High Technology R & D Program of China (Grant Nos. 2014AA032603 and 2014AA032609), and the Guangdong Provincial Special Fund for LED Industrial Development, China (Grant No. 2012A080302003).

摘要: In this paper, we use the a-plane InGaN interlayer to improve the property of a-plane GaN. Based on the a-InGaN interlayer, a template exhibits that a regular, porous structure, which acts as a compliant effect, can be obtained to release the strain caused by the lattice and thermal mismatch between a-GaN and r-sapphire. We find that the thickness of InGaN has a great influence on the growth of a-GaN. The surface morphology and crystalline quality both are first improved and then deteriorated with increasing the thickness of the InGaN interlayer. When the InGaN thickness exceeds a critical point, the a-GaN epilayer peels off in the process of cooling down to room temperature. This is an attractive way of lifting off a-GaN films from the sapphire substrate.

关键词: non-polar a-plane GaN, InGaN interlayer, peel-off, metalorganic chemical vapor deposition

Abstract: In this paper, we use the a-plane InGaN interlayer to improve the property of a-plane GaN. Based on the a-InGaN interlayer, a template exhibits that a regular, porous structure, which acts as a compliant effect, can be obtained to release the strain caused by the lattice and thermal mismatch between a-GaN and r-sapphire. We find that the thickness of InGaN has a great influence on the growth of a-GaN. The surface morphology and crystalline quality both are first improved and then deteriorated with increasing the thickness of the InGaN interlayer. When the InGaN thickness exceeds a critical point, the a-GaN epilayer peels off in the process of cooling down to room temperature. This is an attractive way of lifting off a-GaN films from the sapphire substrate.

Key words: non-polar a-plane GaN, InGaN interlayer, peel-off, metalorganic chemical vapor deposition

中图分类号:  (Atomic force microscopy (AFM))

  • 68.37.Ps
68.55.A- (Nucleation and growth) 78.55.Cr (III-V semiconductors) 81.15.Gh (Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))