Invention Grant
- Patent Title: Methods of forming tensile tungsten films and compressive tungsten films
- Patent Title (中): 形成拉伸钨膜和压缩钨膜的方法
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Application No.: US13928216Application Date: 2013-06-26
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Publication No.: US09034760B2Publication Date: 2015-05-19
- Inventor: Feng Chen , Tsung-Han Yang , Juwen Gao , Roey Shaviv , Raashina Humayun , Deqi Wang
- Applicant: Novellus Systems, Inc.
- Applicant Address: US CA Fremont
- Assignee: Novellus Systems, Inc.
- Current Assignee: Novellus Systems, Inc.
- Current Assignee Address: US CA Fremont
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Main IPC: H01L21/44
- IPC: H01L21/44 ; H01L21/285 ; H01L21/768

Abstract:
Methods, apparatus, and systems for depositing tensile or compressive tungsten films are described. In one aspect, a method includes providing a substrate to a chamber. The substrate has a field region and a feature recessed from the field region. Then, the substrate is exposed to an organometallic tungsten precursor. The organometallic tungsten precursor not adsorbed onto the substrate is removed from the chamber. The substrate is treated with a first treatment including a heat treatment or a plasma treatment to form a tungsten layer on the substrate. After treating the substrate, residual gasses are removed from the chamber. The tungsten layer on the substrate is treated with a second treatment including a heat treatment or a plasma treatment.
Public/Granted literature
- US20140011358A1 METHODS OF FORMING TENSILE TUNGSTEN FILMS AND COMPRESSIVE TUNGSTEN FILMS Public/Granted day:2014-01-09
Information query
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