Flowable Chemical Vapor Deposition (FcvD) Using Multi-Step Anneal Treatment and Devices Thereof

    公开(公告)号:US20230042726A1

    公开(公告)日:2023-02-09

    申请号:US17738527

    申请日:2022-05-06

    Abstract: FCVD using multi-step anneal treatment and devices thereof are disclosed. In an embodiment, a method includes depositing a flowable dielectric film on a substrate. The flowable dielectric film is deposited between a first semiconductor fin and a second semiconductor fin. The method further includes annealing the flowable dielectric film at a first anneal temperature for at least 5 hours to form a first dielectric film, annealing the first dielectric film at a second anneal temperature higher than the first anneal temperature to form a second dielectric film, annealing the second dielectric film at a third anneal temperature higher than the first anneal temperature to form an insulating layer, applying a planarization process to the insulating layer, and etching the insulating layer to STI regions on the substrate.

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