METHOD OF MANUFACTURING INTEGRATED CIRCUIT DEVICE

    公开(公告)号:US20250079154A1

    公开(公告)日:2025-03-06

    申请号:US18652323

    申请日:2024-05-01

    Abstract: A method of manufacturing an integrated circuit device includes forming a hafnium oxide film on a substrate and partially etching the hafnium oxide film. Partially etching the hafnium oxide film includes performing a dry treatment that changes components of a surface region that extends from an exposed surface of the hafnium oxide film into the hafnium oxide film by as much as a predetermined thickness by isotropically exposing the hafnium oxide film to a gas mixture that includes a halogen element-containing gas and a catalytic gas that includes hydrogen atoms in an atmosphere in which no plasma is applied onto the substrate, performing a wet treatment with an acidic solution that at least partially removes the component-changed surface region from the hafnium oxide film, and repeating a sequence of the dry treatment and the wet treatment.

Patent Agency Ranking