Invention Grant
- Patent Title: Selective etch for metal-containing materials
- Patent Title (中): 含金属材料的选择性蚀刻
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Application No.: US14512973Application Date: 2014-10-13
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Publication No.: US09299582B2Publication Date: 2016-03-29
- Inventor: Nitin K. Ingle , Jessica Sevanne Kachian , Lin Xu , Soonam Park , Xikun Wang , Jeffrey W. Anthis
- Applicant: Applied Materials, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: H01L21/3065
- IPC: H01L21/3065 ; H01L21/311 ; H01L21/02 ; C23F1/02 ; C23F1/12 ; H01J37/32 ; C23F4/00 ; H01L21/3213 ; H01L21/768

Abstract:
Methods of selectively etching metal-containing materials from the surface of a substrate are described. The etch selectively removes metal-containing materials relative to silicon-containing films such as silicon, polysilicon, silicon oxide, silicon germanium and/or silicon nitride. The methods include exposing metal-containing materials to halogen containing species in a substrate processing region. A remote plasma is used to excite the halogen-containing precursor and a local plasma may be used in embodiments. Metal-containing materials on the substrate may be pretreated using moisture or another OH-containing precursor before exposing the resulting surface to remote plasma excited halogen effluents in embodiments.
Public/Granted literature
- US20150129545A1 SELECTIVE ETCH FOR METAL-CONTAINING MATERIALS Public/Granted day:2015-05-14
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