Free-standing zinc-blende (cubic) GaN layers and substrates

被引:28
作者
Novikov, S. V. [1 ]
Stanton, N. M. [1 ]
Campion, R. P. [1 ]
Foxon, C. T. [1 ]
Kent, A. J. [1 ]
机构
[1] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
基金
英国工程与自然科学研究理事会;
关键词
substrates; molecular beam epitaxy; nitrides; semiconducting III-V materials;
D O I
10.1016/j.jcrysgro.2008.06.018
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
It has been demonstrated that it is possible to grow by molecular beam epitaxy bulk free-standing zinc-blende (cubic) GaN layers. Such layers have potential applications as lattice matched substrates for growth of non-polar cubic GaN device structures of improved performance. We present the data from characterisation measurements that confirm the cubic nature of the GaN crystals and show that the fraction of the hexagonal material is not more than about 10% in the best 50 mu m thick free-standing GaN samples. Our research is aimed at increasing the size of the free-standing cubic GaN layers in order to make this technology suitable for the commercial production of substrates and we have now demonstrated the growth of 100 mu m thick, 2-in diameter GaN substrates. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:3964 / 3967
页数:4
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