再颁专利
- 专利标题: Semiconductor device and method of fabricating the same
- 专利标题(中): 半导体装置及其制造方法
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申请号: US09915710申请日: 2001-07-27
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公开(公告)号: USRE38805E1公开(公告)日: 2005-10-04
- 发明人: Yasuo Ohba , Ako Hatano
- 申请人: Yasuo Ohba , Ako Hatano
- 申请人地址: JP Kawasaki
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Kawasaki
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: JP6-038157 19940309; JP7-000704 19950106
- 主分类号: H01L29/201
- IPC分类号: H01L29/201 ; H01L29/205 ; H01L31/0304 ; H01L33/00 ; H01L33/32 ; H01S5/02 ; H01S5/042 ; H01S5/323
摘要:
A semiconductor device comprises a single crystal substrate, a nucleus formation buffer layer formed on the single crystal substrate, and a lamination layer including a plurality of Al1-x-yGaxInyN (0≦x≦1, 0≦y≦1, x+y≦1) layers laminated above the nucleus formation buffer layer. The nucleus formation buffer layer is formed of Al1-s-tGasIntN (0≦s≦1, 0≦t≦1, s+t≦1) and is formed on a surface of the substrate such that the nucleus formation buffer layer has a number of pinholes for control of polarity and formation of nuclei. A method of fabricating a semiconductor device comprises the steps of: forming, above an Al1-x-yGaxInyN (0≦x≦1, 0≦y≦1, x+y≦1) semiconductor layer doped with a p-type dopant, a cap layer for preventing evaporation of a constituent element of the semiconductor layer, the cap layer being formed of one of AlN in which a p-type dopant is added and Al2O3, subjecting the semiconductor layer to heat treatment, and removing at least a part of the cap layer.