METHOD FOR MANUFACTURING NITRIDE SEMICONDUCTOR DEVICE
    3.
    发明申请
    METHOD FOR MANUFACTURING NITRIDE SEMICONDUCTOR DEVICE 有权
    制造氮化物半导体器件的方法

    公开(公告)号:US20140120703A1

    公开(公告)日:2014-05-01

    申请号:US14062304

    申请日:2013-10-24

    Inventor: Masayuki IWAMI

    Abstract: Forming a group III nitride semiconductor layer having p-type conductivity on at least one layer or more formed on an Si substrate or sapphire substrate using at least one of an epitaxial growth or ion implantation method. When forming the group III nitride semiconductor layer, at least one type of metal element selected from Zn, Li, Au, Ag, Cu, Pt, and Pd having a formation energy of a group III element substitute higher than that of Mg is doped simultaneously with Mg of a p-type dopant to introduce an interstitial site. Subsequent to activation of Mg as an acceptor, the metal element is removed from the group III nitride semiconductor layer, and the concentration of the metal element is not more than 1/100 of the concentration of Mg to realize a hole concentration of not less than 1018 to 1019 cm−3.

    Abstract translation: 使用外延生长或离子注入方法中的至少一种,在形成于Si衬底或蓝宝石衬底上的至少一层以上形成具有p型导电性的III族氮化物半导体层。 当形成III族氮化物半导体层时,同时掺杂选自具有替代高于Mg的III族元素的形成能的Zn,Li,Au,Ag,Cu,Pt和Pd中的至少一种类型的金属元素 与Mg的p型掺杂剂引入间隙位置。 在作为受体的Mg活化后,从III族氮化物半导体层除去金属元素,金属元素的浓度不超过Mg的浓度的1/100,以实现不小于 1018至1019厘米-3。

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