发明申请
- 专利标题: CONTACT CLEAN BY REMOTE PLASMA AND REPAIR OF SILICIDE SURFACE
- 专利标题(中): 通过远程等离子体清洁和清洁硅胶表面
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申请号: US13004740申请日: 2011-01-11
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公开(公告)号: US20110104897A1公开(公告)日: 2011-05-05
- 发明人: XINLIANG LU , CHIEN-TEH KAO , CHIUKIN STEVE LAI , MEI CHANG
- 申请人: XINLIANG LU , CHIEN-TEH KAO , CHIUKIN STEVE LAI , MEI CHANG
- 主分类号: H01L21/3205
- IPC分类号: H01L21/3205
摘要:
Embodiments provide methods for treating a metal silicide contact which includes positioning a substrate having an oxide layer disposed on a metal silicide contact surface within a processing chamber, cleaning the metal silicide contact surface to remove the oxide layer while forming a cleaned silicide contact surface during a cleaning process, and exposing the cleaned silicide contact surface to a silicon-containing compound to form a recovered silicide contact surface during a regeneration process. In some examples, the cleaning of the metal silicide contact surface includes cooling the substrate to an initial temperature of less than 65° C., forming reactive species from a gas mixture of ammonia and nitrogen trifluoride by igniting a plasma, exposing the oxide layer to the reactive species to form a thin film, and heating the substrate to about 100° C. or greater to remove the thin film from the substrate while forming the cleaned silicide contact surface.
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