S/D CONNECTION TO INDIVIDUAL CHANNEL LAYERS IN A NANOSHEET FET
    1.
    发明申请
    S/D CONNECTION TO INDIVIDUAL CHANNEL LAYERS IN A NANOSHEET FET 有权
    与NANOSHEET FET中的单个通道层的S / D连接

    公开(公告)号:US20160126310A1

    公开(公告)日:2016-05-05

    申请号:US14919634

    申请日:2015-10-21

    Abstract: A field effect transistor (FET) and a method to form the FET are disclosed. The FET comprises a channel region comprising a nanosheet layer/sacrificial layer stack. The stack comprises at least one nanosheet layer/sacrificial layer pair. Each nanosheet layer/sacrificial layer pair comprises an end surface. A conductive material layer is formed on the end surface of the pairs, and a source/drain contact is formed on the conductive material layer. In one embodiment, the sacrificial layer of at least one pair further may comprise a low-k dielectric material proximate to the end surface of the pair. A surface of the low-k dielectric material proximate to the end surface of the pair is in substantial alignment with the end surface of the nanosheet layer. Alternatively, the surface of the low-k dielectric material proximate to the end surface of the pair is recessed with respect to the end surface of the nanosheet layer.

    Abstract translation: 公开了场效应晶体管(FET)和形成FET的方法。 FET包括包括纳米片层/牺牲层堆叠的沟道区。 堆叠包括至少一个纳米片层/牺牲层对。 每个纳米片层/牺牲层对包括端面。 在该对的端面上形成导电材料层,并且在导电材料层上形成源极/漏极接触。 在一个实施例中,至少一对的牺牲层还可以包括靠近该对的端表面的低k电介质材料。 靠近该对的端面的低k电介质材料的表面与纳米片层的端面基本对准。 或者,靠近该对的端表面的低k电介质材料的表面相对于纳米片层的端表面凹陷。

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