Invention Grant
- Patent Title: Methods for depositing metal in high aspect ratio features
- Patent Title (中): 在高宽比特征中沉积金属的方法
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Application No.: US13178870Application Date: 2011-07-08
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Publication No.: US08846451B2Publication Date: 2014-09-30
- Inventor: Alan Ritchie , Karl Brown , John Pipitone
- Applicant: Alan Ritchie , Karl Brown , John Pipitone
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Moser Taboada
- Agent Alan Taboada
- Main IPC: H01L21/4763
- IPC: H01L21/4763 ; H01L21/44 ; H01L21/285 ; H01J37/34 ; H01L21/768 ; C23C14/34 ; C23C14/04 ; C23C14/35 ; C23C16/503 ; C23C16/52 ; C23C16/56

Abstract:
Methods for depositing metal in high aspect ratio features formed on a substrate are provided herein. In some embodiments, a method includes applying first RF power at VHF frequency to target comprising metal disposed above substrate to form plasma, applying DC power to target to direct plasma towards target, sputtering metal atoms from target using plasma while maintaining pressure in PVD chamber sufficient to ionize predominant portion of metal atoms, depositing first plurality of metal atoms on bottom surface of opening and on first surface of substrate, applying second RF power to redistribute at least some of first plurality from bottom surface to lower portion of sidewalls of the opening, and depositing second plurality of metal atoms on upper portion of sidewalls by reducing amount of ionized metal atoms in PVD chamber, wherein first and second pluralities form a first layer deposited on substantially all surfaces of opening.
Public/Granted literature
- US20120028461A1 METHODS FOR DEPOSITING METAL IN HIGH ASPECT RATIO FEATURES Public/Granted day:2012-02-02
Information query
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