GAS INJECTION SYSTEM FOR USE IN A PROCESSING CHAMBER

    公开(公告)号:US20240425986A1

    公开(公告)日:2024-12-26

    申请号:US18746189

    申请日:2024-06-18

    Abstract: Methods and apparatuses for decoupling the tuning of cross-substrate thickness variation and cross-substrate resistance variation in a gas injection system are described. A controller in a gas injection system may deposit, via control of the plurality of first mass flow controllers (MFCs) and the plurality of second MFCs, a material layer deposited on a substrate. The controller may adjust, via control of the plurality of first MFCs, a cross-substrate thickness variation of the material layer. The controller may adjust, via control of the plurality of second MFCs and independent of the cross-substrate thickness variation, cross-substrate resistivity variation of the material layer.

    EPITAXY FAST RAMP TEMPERATURE CONTROL SYSTEMS AND PROCESSES

    公开(公告)号:US20240404891A1

    公开(公告)日:2024-12-05

    申请号:US18677160

    申请日:2024-05-29

    Abstract: Substrate processing systems and methods include: (a) seating a substrate on a support; (b) optically measuring center substrate temperature using a first pyrometer; (c) optically measuring edge substrate temperature using a second pyrometer; and (d) determining an edge offset temperature between the edge substrate temperature and the center substrate temperature. Three temperature ramping steps are used to heat up the substrate for processing: two fast ramping steps and one slow ramping steps. After substrate processing, an initial, controlled cooling step is provided. During at least the second fast temperature ramping step, the slow temperature ramping step, the substrate processing step(s), and the initial controlled cooling step, heating of the substrate is controlled to place and/or hold the edge offset temperature within predetermined ranges in order to maintain uniform temperature and/or a desired temperature gradient across the substrate. Such systems and methods help avoid crystal defects (e.g., slip) and/or auto-doping.

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