Characteristics of high Al content AlxGa1-xN grown by metalorganic chemical vapor deposition

被引:8
作者
Wang, Xiaoyan [1 ]
Wang, Xiaoliang [1 ]
Hu, Guoxin [1 ]
Wang, Baozhu [1 ]
Ma, Zhiyong [1 ]
Xiao, Hongling [1 ]
Wang, Cuimei [1 ]
Ran, Junxue [1 ]
Li, Jianping [1 ]
机构
[1] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
AlxGa1-xN; MOCVD; high Al content; photodetector;
D O I
10.1016/j.mejo.2007.07.090
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The epitaxial growth of AlxGa1-xN film with high Al content by metalorganic chemical vapor deposition (MOCVD) has been accomplished. The resulting Al content was determined to be 54% by high resolution X-ray diffraction (HRXRD) and Vegard's law. The full width at half maximum (FWHM) of the AlGaN (0002) HRXRD rocking curve was about 597 arcsec. Atomic force microscopy (AFM) image showed a relatively rough surface with grain-like islands, mainly coming from the low surface mobility of adsorbed Alspecies. From transmittance measurement, the cut-off wavelength was around 280 nm and Fabry-Perot fringes were clearly visible in the transmission region. Cathodoluminescence (CL) measurement indicated that there existed a uniformity in the growth direction and a non-uniformity in the lateral direction. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:838 / 841
页数:4
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