Semiconductor devices with improved source/drain contact resistance and methods of manufacturing the same

    公开(公告)号:US09728465B2

    公开(公告)日:2017-08-08

    申请号:US14873456

    申请日:2015-10-02

    Abstract: In a method of manufacturing a semiconductor device, a first gate structure and a second gate structure are formed on a substrate in a first region and a second region, respectively. A first semiconductor pattern including germanium is formed in the first region on the substrate. A first metal layer is formed on the substrate to cover the first semiconductor pattern. A first heat treatment process is performed such that the first semiconductor pattern and the first metal layer react with each other to form a first metal-semiconductor composite pattern in the first region and a semiconductor material of the substrate and the first metal layer react with each other to form a second metal-semiconductor composite pattern in the second region. The first metal-semiconductor composite pattern is removed from the substrate. A second metal layer is formed on the substrate to cover the second metal-semiconductor composite pattern. The second metal layer includes a material different from the first metal layer. A second heat treatment process is performed such that the substrate and the second metal layer react with each other to form a third metal-semiconductor composite pattern.

    INTEGRATED CIRCUIT DEVICE
    18.
    发明申请

    公开(公告)号:US20190043959A1

    公开(公告)日:2019-02-07

    申请号:US15871628

    申请日:2018-01-15

    Abstract: An integrated circuit device includes a substrate, a gate structure, a spacer structure, a source/drain region, and a first contact structure. The substrate includes a fin-type active region. The gate structure intersects with the fin-type active region on the substrate, and has two sides and two side walls. The spacer structure is disposed on both side walls of the gate structure and includes a first spacer layer contacting at least a portion of both side walls of the gate structure and a second spacer layer disposed on the first spacer layer and having a lower dielectric constant than a dielectric constant of the first spacer layer. The source/drain region is disposed on both sides of the gate structure. The first contact structure is electrically connected to the source/drain region and includes a first contact plug disposed on the source/drain region and a first metallic capping layer disposed on the first contact plug.

    Semiconductor device and method of fabricating the same

    公开(公告)号:US10032641B2

    公开(公告)日:2018-07-24

    申请号:US15137946

    申请日:2016-04-25

    CPC classification number: H01L21/31 H01L21/823431 H01L27/0886

    Abstract: A semiconductor device is provided as follows. A first fin-type pattern is disposed on a substrate. A first field insulating film is adjacent to a sidewall of the first fin-type pattern. A second field insulating film is adjacent to a sidewall of the first field insulating film. The first field insulating film is interposed between the first fin-type pattern and the second field insulating film. The second field insulating film comprises a first region and a second region. The first region is closer to the sidewall of the first field insulating film. A height from a bottom of the second field insulating film to an upper surface of the second region is larger than a height from the bottom of the second field insulating film to an upper surface of the first region.

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