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发明名称
半导体晶圆及半导体装置之制造方法
摘要
本发明在Si基板11上形成渐变SiGe缓冲层12和SiGe缓冲层13,在其上于临界膜厚以下形成应变Si层14,以降低施加于应变Si层14和SiGe缓冲层13之界面的应力,实现结晶缺陷密度小的应变Si层14,再者,藉由以晶格常数大于Si的SiGe覆盖层21覆盖应变Si层14表面,防止后步骤中牺牲氧化所导致的应变Si层14消失,实现可于其上形成闸极氧化膜的高品质应变Si晶圆。
申请公布号
TW200707513
申请公布日期
2007.02.16
申请号
TW095125525
申请日期
2006.07.12
申请人
东芝股份有限公司
发明人
永野元;齐藤芳彦
分类号
H01L21/00(2006.01)
主分类号
H01L21/00(2006.01)
代理机构
代理人
陈长文
主权项
地址
日本
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