MICROWAVE HIGH-DENSITY PLASMA FOR SELECTIVE ETCH

    公开(公告)号:US20250118536A1

    公开(公告)日:2025-04-10

    申请号:US18484379

    申请日:2023-10-10

    Abstract: Semiconductor processing systems and methods for increased etch selectivity and rate are provided. Methods include etching a target material of a semiconductor substrate by flowing one or more plasma precursors through a microwave applicator into a remote plasma region of a semiconductor processing chamber. Generating a remote plasma within the remote plasma region at a microwave frequency, where the generated remote plasma comprises a density of greater than 1×1010 per cm3, an ion energy of less than or about 50 eV, or a combination thereof. Flowing the plasma effluents into a processing region of the semiconductor processing chamber. The microwave applicator includes a resonator body and a plate, where the resonator body is formed from or coated with a first dielectric material and the plate is formed from or coated with a second dielectric material.

    TECHNIQUES FOR VOID-FREE MATERIAL DEPOSITIONS

    公开(公告)号:US20230369112A1

    公开(公告)日:2023-11-16

    申请号:US18224904

    申请日:2023-07-21

    CPC classification number: H01L21/76879 H01L21/486

    Abstract: Embodiments herein include void-free material depositions on a substrate (e.g., in a void-free trench-filled (VFTF) component) obtained using directional etching to remove predetermined portions of a seed layer covering the substrate. In several embodiments, directional etching followed by selective deposition can enable fill material (e.g., metal) patterning in tight spaces without any voids or seams. Void-free material depositions may be used in a variety of semiconductor devices, such as transistors, dual work function stacks, dynamic random-access memory (DRAM), non-volatile memory, and the like.

Patent Agency Ranking