Invention Grant
- Patent Title: Method for forming tungsten film at a surface of a processing target material, film-forming apparatus, storage medium and semiconductor device with a tungsten film
- Patent Title (中): 在处理对象材料的表面形成钨膜的方法,成膜装置,存储介质和具有钨膜的半导体器件
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Application No.: US11994339Application Date: 2006-06-23
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Publication No.: US08168539B2Publication Date: 2012-05-01
- Inventor: Masahito Sugiura , Yasutaka Mizoguchi , Yasushi Aiba
- Applicant: Masahito Sugiura , Yasutaka Mizoguchi , Yasushi Aiba
- Applicant Address: JP Tokyo
- Assignee: Tokyo Electron Limited
- Current Assignee: Tokyo Electron Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-194170 20050701
- International Application: PCT/JP2006/312606 WO 20060623
- International Announcement: WO2007/004443 WO 20070111
- Main IPC: H01L21/44
- IPC: H01L21/44

Abstract:
A tungsten film with a lower specific resistance and a lower fluorine concentration over its boundary with the base barrier layer, which adheres to the barrier layer with a high level of reliability, compared to tungsten films formed through methods in the related art, is formed. The tungsten film is formed through a process in which a silicon-containing gas is delivered to a wafer M placed within a processing container 14 and a process executed after the silicon-containing gas supply process, in which a first tungsten film 70 is formed by alternately executing multiple times, a tungsten-containing gas supply step for supplying a tungsten-containing gas and a hydrogen compound gas supply step for supplying a hydrogen compound gas with no silicon content with a purge step in which an inert gas is supplied into the processing container and/or an evacuation step for evacuating the processing container executed between the tungsten-containing gas supply step and the hydrogen compound gas supply step.
Public/Granted literature
- US20090045517A1 METHOD FOR FORMING TUNGSTEN FILM, FILM-FORMING APPARATUS, STORAGE MEDIUM AND SEMICONDUCTOR DEVICE Public/Granted day:2009-02-19
Information query
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