- 专利标题: Multi-cycle ALD process for film uniformity and thickness profile modulation
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申请号: US14814372申请日: 2015-07-30
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公开(公告)号: US10526701B2公开(公告)日: 2020-01-07
- 发明人: Purushottam Kumar , Adrien LaVoie , Hu Kang , Jun Qian , Tuan Nguyen , Ye Wang
- 申请人: Lam Research Corporation
- 申请人地址: US CA Fremont
- 专利权人: Lam Research Corporation
- 当前专利权人: Lam Research Corporation
- 当前专利权人地址: US CA Fremont
- 代理机构: Weaver Austin Villeneuve & Sampson LLP
- 主分类号: C23C16/50
- IPC分类号: C23C16/50 ; C23C16/455
摘要:
Methods of depositing uniform films on substrates using multi-cyclic atomic layer deposition techniques are described. Methods involve varying one or more parameter values from cycle to cycle to tailor the deposition profile. For example, some methods involve repeating a first ALD cycle using a first carrier gas flow rate during precursor exposure and a second ALD cycle using a second carrier gas flow rate during precursor exposure. Some methods involve repeating a first ALD cycle using a first duration of precursor exposure and a second ALD cycle using a second duration of precursor exposure.
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