STRUCTURES WITH AN AIRGAP AND METHODS OF FORMING SUCH STRUCTURES

    公开(公告)号:US20190273132A1

    公开(公告)日:2019-09-05

    申请号:US15911831

    申请日:2018-03-05

    Abstract: Structures that include an airgap and methods for forming a structure that includes an airgap. A layer stack is epitaxially grown on a substrate and includes a first semiconductor layer and a second semiconductor layer on a substrate. A plurality of openings are formed that extend through a device region of the first semiconductor layer to the second semiconductor layer. The second semiconductor layer is etched through the openings and selective to the substrate and the first semiconductor layer so as to form an airgap that is arranged in a vertical direction between the substrate and the device region. A device structure is formed in the device region of the first semiconductor layer.

    Structures with an airgap and methods of forming such structures

    公开(公告)号:US10388728B1

    公开(公告)日:2019-08-20

    申请号:US15911831

    申请日:2018-03-05

    Abstract: Structures that include an airgap and methods for forming a structure that includes an airgap. A layer stack is epitaxially grown on a substrate and includes a first semiconductor layer and a second semiconductor layer on a substrate. A plurality of openings are formed that extend through a device region of the first semiconductor layer to the second semiconductor layer. The second semiconductor layer is etched through the openings and selective to the substrate and the first semiconductor layer so as to form an airgap that is arranged in a vertical direction between the substrate and the device region. A device structure is formed in the device region of the first semiconductor layer.

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