FILM-FORMING METHOD, FILM-FORMING APPARATUS, AND OXIDATION METHOD

    公开(公告)号:US20220068637A1

    公开(公告)日:2022-03-03

    申请号:US17310258

    申请日:2019-10-28

    Abstract: A film-forming method of forming an oxide film on a substrate inside a chamber, includes: adsorbing a raw material gas for forming the oxide film onto the substrate by supplying the raw material gas into the chamber; and oxidizing the raw material gas adsorbed onto the substrate with oxygen-containing radicals produced by supplying a hydrogen gas and an oxygen gas into the chamber while preheating the hydrogen gas and the oxygen gas, wherein the adsorbing the raw material gas and the oxidizing the raw material gas are repeated, and when supplying at least one of the hydrogen gas and the oxygen gas, a supply partial pressure of the at least one of the hydrogen gas and the oxygen gas is changed to be relatively high at an initial supply stage and to gradually decrease over time.

    FILM FORMING METHOD AND FILM FORMING APPARATUS

    公开(公告)号:US20230137865A1

    公开(公告)日:2023-05-04

    申请号:US18049661

    申请日:2022-10-26

    Abstract: A method of forming a crystalline structure film containing strontium, titanium, and oxygen on a substrate, includes: forming an amorphous structure film on a surface of a titanium nitride film formed on a surface of the substrate, the amorphous structure film containing strontium and oxygen and having a titanium content adjusted so that a content ratio of titanium to strontium based on the number of atoms becomes a value in a range of 0 or more and less than 1.0; and obtaining a crystalline structure film containing strontium, titanium and oxygen and containing titanium diffused from the titanium nitride film by heating the substrate, on which the amorphous structure film is formed, at a temperature of 500 degrees C. or higher.

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