Invention Application
- Patent Title: METHODS OF DRY STRIPPING BORON-CARBON FILMS
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Application No.: US14934923Application Date: 2015-11-06
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Publication No.: US20160064209A1Publication Date: 2016-03-03
- Inventor: Kwangduk Douglas LEE , Sudha RATHI , Ramprakash SANKARAKRISHNAN , Martin Jay SEAMONS , Irfan JAMIL , Bok Hoen KIM
- Applicant: Applied Materials, Inc.
- Main IPC: H01L21/02
- IPC: H01L21/02 ; B08B7/00

Abstract:
Embodiments of the invention generally relate to methods of dry stripping boron-carbon films. In one embodiment, alternating plasmas of hydrogen and oxygen are used to remove a boron-carbon film. In another embodiment, co-flowed oxygen and hydrogen plasma is used to remove a boron-carbon containing film. A nitrous oxide plasma may be used in addition to or as an alternative to either of the above oxygen plasmas. In another embodiment, a plasma generated from water vapor is used to remove a boron-carbon film. The boron-carbon removal processes may also include an optional polymer removal process prior to removal of the boron-carbon films. The polymer removal process includes exposing the boron-carbon film to NF3 to remove from the surface of the boron-carbon film any carbon-based polymers generated during a substrate etching process.
Public/Granted literature
- US10510518B2 Methods of dry stripping boron-carbon films Public/Granted day:2019-12-17
Information query
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