Semiconductor Device
    1.
    发明申请
    Semiconductor Device 审中-公开
    半导体器件

    公开(公告)号:US20090173969A1

    公开(公告)日:2009-07-09

    申请号:US12225580

    申请日:2007-05-30

    IPC分类号: H01L29/778 H01L33/00

    摘要: A semiconductor device having an AlGaN—GaN heterojunction structure including an AlGaN layer and a GaN layer which device exhibits no changes over time in sheet resistance.As shown in FIG. 1, in a semiconductor device having an AlGaN—GaN heterojunction structure including an AlGaN layer 1 and a GaN layer 2, when the Al molar fraction of AlGaN (x %) and the thickness of the AlGaN layer (y nm) satisfy the relations: x+y

    摘要翻译: 具有包括AlGaN层和GaN层的AlGaN-GaN异质结结构的半导体器件,该器件在薄层电阻上随时间呈现不变化。 如图所示。 如图1所示,在具有包括AlGaN层1和GaN层2的AlGaN-GaN异质结结构的半导体器件中,当AlGaN的Al摩尔分数(x%)和AlGaN层的厚度(ynm)满足以下关系时: x + y <55,25 <= x <= 40,y> = 10,y小于临界厚度,从而在AlGaN层中不产生裂纹。 因此,本发明提供一种半导体器件,尽管Al摩尔分数高,实际上其表面电阻几乎没有随时间变化。