HIGH ASPECT RATIO SHARED CONTACTS
    3.
    发明申请

    公开(公告)号:WO2023066639A1

    公开(公告)日:2023-04-27

    申请号:PCT/EP2022/077225

    申请日:2022-09-29

    Abstract: A stacked device is provided. The stacked device includes a reduced height active device layer, and a plurality of lower source/drain regions in the reduced height active device layer. The stacked device further includes a lower interlayer dielectric (ILD) layer on the plurality of lower source/drain regions, and a conductive trench spacer in the lower interlayer dielectric (ILD) layer, wherein the conductive trench spacer is adjacent to one of the plurality of lower source/drain regions. The stacked device further includes a top active device layer adjacent to the lower interlayer dielectric (ILD) layer, and an upper source/drain section in the top active device layer. The stacked device further includes a shared contact in electrical connection with the upper source/drain section, the conductive trench spacer, and the one of the plurality of lower source/drain regions.

    环栅结构源漏的外延制备方法以及环栅结构

    公开(公告)号:WO2023035270A1

    公开(公告)日:2023-03-16

    申请号:PCT/CN2021/118020

    申请日:2021-09-13

    Abstract: 本发明提供了一种环栅结构源漏的外延制备方法以及环栅结构,其中的方法包括:提供一衬底,在所述衬底上形成多个鳍片,沿沟道方向,相邻的两个鳍片之间具有凹槽;在所述衬底上淀积非晶硅层;对所述非晶硅层进行退火,以使所述非晶硅层结晶形成单晶硅层;以所述单晶硅层的表面为起始表面,外延生长锗硅材料,形成锗硅体层;在所述锗硅体层形成环栅结构的源/漏区;通过在凹槽淀积非晶硅层,然后将非晶硅层经过退火处理结晶成单晶硅层,以单晶硅层为起始表面生长锗硅体层的方法,能够制备出无位错高质量的硅锗体层,为沟道提供足够的应力,提升环栅器件的空穴迁移率,进而提高环栅器件的开启电流。

    VOID-FREE CONTACT TRENCH FILL IN GATE-ALL-AROUND FET ARCHTECTURE

    公开(公告)号:WO2022250820A1

    公开(公告)日:2022-12-01

    申请号:PCT/US2022/026141

    申请日:2022-04-25

    Abstract: A method of forming a contact trench structure in a semiconductor device, the method includes performing a first selective deposition process to form a contact on sidewalls of a trench, each of the sidewalls of the trench comprising a first cross section of a first material and a second cross section of a second material, performing a second selective deposition process to form a metal silicide layer on the contact, performing a first metal fill process to form a contact plug within the trench, the first metal fill process including depositing a contact plug metal material within the trench, performing an etch process to form an opening within the trench, comprising partially etching the contact plug metal material within the trench, and performing a second metal fill process, the second metal fill process comprising depositing the contact plug metal material within the opening.

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