Cyclic epitaxy process to form air gap isolation for a bipolar transistor

    公开(公告)号:US10186605B1

    公开(公告)日:2019-01-22

    申请号:US15783109

    申请日:2017-10-13

    Abstract: A bipolar transistor is supported by a single-crystal silicon substrate including a collector contact region. A cyclical epitaxy process is performed to provide a collector region of a first conductivity type on the collector contact region that is laterally separated from a silicon layer by an air gap. A second epitaxial region forms a base region of a second conductivity type. Deposited semiconductor material forms an emitter region of the first conductivity type. The collector region, base region and emitter region are located within an opening formed in a stack of insulating layers that includes a sacrificial layer. The sacrificial layer is selectively removed to expose a side wall of the base region. Epitaxial growth from the exposed sidewall forms a base contact region.

    PROCESS FOR PRODUCING AT LEAST ONE DEEP TRENCH ISOLATION
    3.
    发明申请
    PROCESS FOR PRODUCING AT LEAST ONE DEEP TRENCH ISOLATION 有权
    用于生产至少一次深度分离分离的方法

    公开(公告)号:US20130095636A1

    公开(公告)日:2013-04-18

    申请号:US13653911

    申请日:2012-10-17

    CPC classification number: H01L21/76237

    Abstract: A method for producing at least one deep trench isolation in a semiconductor substrate including silicon and having a front side may include forming at least one cavity in the semiconductor substrate from the front side. The method may include conformally depositing dopant atoms on walls of the cavity, and forming, in the vicinity of the walls of the cavity, a silicon region doped with the dopant atoms. The method may further include filling the cavity with a filler material to form the at least one deep trench isolation.

    Abstract translation: 在包括硅并且具有前侧的半导体衬底中产生至少一个深沟槽隔离的方法可以包括从前侧形成半导体衬底中的至少一个空腔。 该方法可以包括在腔的壁上共形沉积掺杂剂原子,并且在空腔的壁附近形成掺杂有掺杂剂原子的硅区。 该方法还可以包括用填充材料填充空腔以形成至少一个深沟槽隔离。

    Process for producing at least one deep trench isolation
    4.
    发明授权
    Process for producing at least one deep trench isolation 有权
    用于产生至少一个深沟槽隔离的工艺

    公开(公告)号:US08975154B2

    公开(公告)日:2015-03-10

    申请号:US13653911

    申请日:2012-10-17

    CPC classification number: H01L21/76237

    Abstract: A method for producing at least one deep trench isolation in a semiconductor substrate including silicon and having a front side may include forming at least one cavity in the semiconductor substrate from the front side. The method may include conformally depositing dopant atoms on walls of the cavity, and forming, in the vicinity of the walls of the cavity, a silicon region doped with the dopant atoms. The method may further include filling the cavity with a filler material to form the at least one deep trench isolation.

    Abstract translation: 在包括硅并且具有前侧的半导体衬底中产生至少一个深沟槽隔离的方法可以包括从前侧形成半导体衬底中的至少一个空腔。 该方法可以包括在腔的壁上共形沉积掺杂剂原子,并且在空腔的壁附近形成掺杂有掺杂剂原子的硅区。 该方法还可以包括用填充材料填充空腔以形成至少一个深沟槽隔离。

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