Second contact schottky metal layer to improve GaN schottky diode performance
    1.
    发明申请
    Second contact schottky metal layer to improve GaN schottky diode performance 失效
    第二接触肖特基金属层提高GaN肖特基二极管性能

    公开(公告)号:US20120043551A1

    公开(公告)日:2012-02-23

    申请号:US13200206

    申请日:2011-09-21

    IPC分类号: H01L29/20 H01L29/205

    摘要: A Schottky diode includes a first nitride-based semiconductor layer disposed atop a substrate. A second nitride-based semiconductor layer is disposed atop a portion of the first nitride-based semiconductor layer. The second layer has a doping concentration lower than that of the first layer. A first Schottky contact metal layer having a first metal work function is disposed on a top planar surface of the second layer, forming a first Schottky junction. A second Schottky contact metal layer having a second metal work function is disposed atop of and laterally surrounding the first Schottky contact metal layer, the metal work function of the second metal layer is higher than that of the first metal layer. A metal layer disposed on first and second planar surfaces forms an ohmic contact with the first nitride-based semiconductor layer.

    摘要翻译: 肖特基二极管包括设置在基板顶上的第一氮化物基半导体层。 第二氮化物基半导体层设置在第一氮化物基半导体层的一部分的顶部。 第二层的掺杂浓度低于第一层的掺杂浓度。 具有第一金属功函数的第一肖特基接触金属层设置在第二层的顶平面上,形成第一肖特基结。 具有第二金属功函数的第二肖特基接触金属层设置在第一肖特基接触金属层的顶部并且横向围绕第一肖特基接触金属层,第二金属层的金属功函数高于第一金属层的金属功函数。 设置在第一和第二平面上的金属层与第一氮化物基半导体层形成欧姆接触。

    Second contact schottky metal layer to improve GaN schottky diode performance
    2.
    发明授权
    Second contact schottky metal layer to improve GaN schottky diode performance 失效
    第二接触肖特基金属层提高GaN肖特基二极管性能

    公开(公告)号:US08629525B2

    公开(公告)日:2014-01-14

    申请号:US13200206

    申请日:2011-09-21

    IPC分类号: H01L31/07

    摘要: A Schottky diode includes a first nitride-based semiconductor layer disposed atop a substrate. A second nitride-based semiconductor layer is disposed atop a portion of the first nitride-based semiconductor layer. The second layer has a doping concentration lower than that of the first layer. A first Schottky contact metal layer having a first metal work function is disposed on a top planar surface of the second layer, forming a first Schottky junction. A second Schottky contact metal layer having a second metal work function is disposed atop of and laterally surrounding the first Schottky contact metal layer, the metal work function of the second metal layer is higher than that of the first metal layer. A metal layer disposed on first and second planar surfaces forms an ohmic contact with the first nitride-based semiconductor layer.

    摘要翻译: 肖特基二极管包括设置在基板顶上的第一氮化物基半导体层。 第二氮化物基半导体层设置在第一氮化物基半导体层的一部分的顶部。 第二层的掺杂浓度低于第一层的掺杂浓度。 具有第一金属功函数的第一肖特基接触金属层设置在第二层的顶平面上,形成第一肖特基结。 具有第二金属功函数的第二肖特基接触金属层设置在第一肖特基接触金属层的顶部并且横向围绕第一肖特基接触金属层,第二金属层的金属功函数高于第一金属层的金属功函数。 设置在第一和第二平面上的金属层与第一氮化物基半导体层形成欧姆接触。

    Second Schottky contact metal layer to improve GaN Schottky diode performance
    3.
    发明授权
    Second Schottky contact metal layer to improve GaN Schottky diode performance 失效
    第二肖特基接触金属层,以提高GaN肖特基二极管的性能

    公开(公告)号:US08026568B2

    公开(公告)日:2011-09-27

    申请号:US11589124

    申请日:2006-10-27

    IPC分类号: H01L31/07 H01L21/338

    摘要: A Schottky contact is disposed atop a surface of a semiconductor. A first Schottky contact metal layer is disposed atop a first portion of the semiconductor surface. A second Schottky contact metal is disposed atop a second portion of the surface layer and adjoins the first Schottky contact metal layer. The first Schottky contact metal layer has a lower work function than the second Schottky contact metal layer.

    摘要翻译: 将肖特基接触件设置在半导体的表面上。 第一肖特基接触金属层设置在半导体表面的第一部分的顶部。 第二肖特基接触金属设置在表面层的第二部分的顶部并与第一肖特基接触金属层相邻。 第一肖特基接触金属层的功函数低于第二肖特基接触金属层。