发明授权
- 专利标题: Methods of fabricating tungsten contacts with tungsten nitride barrier layers in semiconductor devices, tungsten contacts with tungsten nitride barrier layers
- 专利标题(中): 在半导体器件中制造与钨氮化物阻挡层的钨接触的方法,钨与氮化钨阻挡层接触
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申请号: US10920482申请日: 2004-08-18
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公开(公告)号: US07189641B2公开(公告)日: 2007-03-13
- 发明人: Sang-Woo Lee , Gil-Heyun Choi , Jong-Myeong Lee , Kyung-In Choi
- 申请人: Sang-Woo Lee , Gil-Heyun Choi , Jong-Myeong Lee , Kyung-In Choi
- 申请人地址: KR
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR
- 代理机构: Myers Bigel Sibley & Sajovec, PA
- 优先权: KR10-2003-57264 20030819
- 主分类号: H01L21/4763
- IPC分类号: H01L21/4763
摘要:
A method forming a tungsten contact can include forming a contact hole in an interlayer dielectric layer to expose a portion of an underlying silicon based substrate and to form a side wall of the contact hole. A tungsten silicide layer can be formed on at least on the exposed portion of the substrate. A tungsten nitride layer can be conformally formed on a surface of the interlayer dielectric layer, on the tungsten silicide layer and on the side wall. A contact tungsten layer can be formed on the tungsten nitride layer to fill the contact hole. Related apparatus and contacts are also disclosed.
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