METHODS OF PREVENTING METAL CONTAMINATION BY CERAMIC HEATER

    公开(公告)号:US20230313378A1

    公开(公告)日:2023-10-05

    申请号:US17709931

    申请日:2022-03-31

    IPC分类号: C23C16/458 C23C16/455

    CPC分类号: C23C16/4586 C23C16/45544

    摘要: Substrate support, substrate support assemblies and process chambers comprising same are described. The substrate support has a thermally conductive body with a top surface, a bottom surface and an outer edge, and a plurality of long edge purge channel outlet opening at the outer edge of the thermally conductive body. The substrate support is configured to support a substrate to be processed on a top surface of the substrate support. The top surface of the thermally conductive body may have a ceramic coating. Each of the plurality of purge channel outlet is in fluid communication with a long edge purge channel. The long edge purge channel is coated with a long edge purge channel coating. A substrate support assembly includes the substrate support and the support post coupled to the substrate support. The processing chamber include a chamber body and the substrate support within the chamber body.

    METHODS FOR SEAMLESS GAP FILLING USING GRADIENT OXIDATION

    公开(公告)号:US20230113514A1

    公开(公告)日:2023-04-13

    申请号:US17541702

    申请日:2021-12-03

    摘要: Processing methods described herein comprise forming a metal gate film on a narrow feature and a wide feature and depositing a hard mask on the metal gate film. The hard mask forms on the metal gate film at a top, bottom and sidewalls of the wide feature and on a top of the narrow feature to cover the metal gate film. Some processing methods comprise oxidizing the metal gate film on the narrow feature to convert a portion of the metal gate film to a metal oxide film. Some processing methods comprise etching the metal oxide film from the narrow feature to leave a gradient etch profile. Some processing methods comprise filling the narrow feature and the wide feature with a gap fill material comprising one or more of a metal nitride, titanium nitride (TiN) or titanium oxynitride (TiON), the gap fill material substantially free of seams and voids.

    On stack overlay improvement for 3D NAND

    公开(公告)号:US11276569B2

    公开(公告)日:2022-03-15

    申请号:US16515230

    申请日:2019-07-18

    IPC分类号: H01L21/02

    摘要: Embodiments described herein relate to manufacturing layer stacks of oxide/nitride (ON) layers with minimized in-plane distortion (IPD) and lithographic overlay errors. A method of forming a layer stack ON layers includes flowing a first silicon-containing gas, an oxygen-containing gas, and a first dilution gas. A RF power is symmetrically applied to form a first material layer of SiO2. A second silicon-containing gas, a nitrogen-containing gas, and a second dilution gas are flowed. A second RF power is symmetrically applied to form a second material layer of Si3N4. The flowing the first silicon-containing gas, the oxygen-containing gas, and the first dilution gas, the symmetrically applying the first RF power, the flowing the second silicon-containing gas, the nitrogen-containing gas, and the second dilution gas, and the symmetrically applying the second RF power is repeated until a desired number of first material layers and second material layers make up a layer stack.