发明名称 Dual work function metal gates and methods of forming
摘要 Complementary transistors and methods of forming the complementary transistors on a semiconductor assembly are described. The transistors can be formed from a metal silicon compound deficient of silicon bonding atoms on a dielectric material overlying a semiconductor substrate conductively doped for PMOS and NMOS regions. The metal silicon compound overlying the NMOS region is converted to a metal silicon nitride and the metal silicon compound overlying the PMOS region is converted to a metal silicide. NMOS transistor gate electrodes comprising metal silicon nitride and PMOS transistor gate electrodes comprising metal silicide can be formed.
申请公布号 US7101747(B2) 申请公布日期 2006.09.05
申请号 US20050180288 申请日期 2005.07.13
申请人 发明人
分类号 H01L21/8238 主分类号 H01L21/8238
代理机构 代理人
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