Semiconductor device and method of fabricating the same
    4.
    发明授权
    Semiconductor device and method of fabricating the same 有权
    半导体装置及其制造方法

    公开(公告)号:US06420197B1

    公开(公告)日:2002-07-16

    申请号:US09511371

    申请日:2000-02-23

    IPC分类号: H01L2100

    摘要: A semiconductor device comprises a substrate having a first thermal expansion coefficient T1, a strain reducing layer formed on the substrate and having a second thermal expansion coefficient T2, and a semiconductor layer formed on the strain reducing layer, having a third thermal expansion coefficient T3, and made of a nitride compound represented by AlyGa1−y−zInzN (0≦y≦1, 0≦z ≦1). The second thermal expansion coefficient T2 is lower than the first thermal expansion coefficient T1. The third thermal expansion coefficient T3 is lower than the first thermal expansion coefficient T1 and higher than the second thermal expansion coefficient T2.

    摘要翻译: 半导体器件包括具有第一热膨胀系数T1的基板和形成在基板上并具有第二热膨胀系数T2的应变减小层,以及形成在应变减小层上的具有第三热膨胀系数T3的半导体层, 并由由Al y Ga 1-y-z In z N(0≤y≤1,0<= z <= 1)表示的氮化物组成。 第二热膨胀系数T2低于第一热膨胀系数T1。 第三热膨胀系数T3比第一热膨胀系数T1低,高于第二热膨胀系数T2。