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    • 4. 发明授权
    • Diamond semiconductor device and method for manufacturing the same
    • 金刚石半导体器件及其制造方法
    • US07064352B2
    • 2006-06-20
    • US11003510
    • 2004-12-06
    • Yoshihiro YokotaNobuyuki KawakamiTakeshi TachibanaKazushi Hayashi
    • Yoshihiro YokotaNobuyuki KawakamiTakeshi TachibanaKazushi Hayashi
    • H01L31/312H01L21/00
    • H01L29/1602H01L29/78
    • A diamond semiconductor device includes a substrate made of single crystal diamond; a first diamond layer, placed on the substrate, containing an impurity; a second diamond layer containing the impurity, the second diamond layer being placed on the substrate and spaced from the first diamond layer; and a third diamond layer which has a impurity content less than that of the first and second diamond layers, which acts as a channel region, and through which charges are transferred from the first diamond layer to the second diamond layer. The first and second diamond layers have a first and a second end portion, respectively, facing each other with a space located therebetween. The first and second end portions have slopes epitaxially formed depending on the orientation of the substrate. The third diamond layer lies over the slopes and a section of the substrate that is located under the space.
    • 金刚石半导体器件包括由单晶金刚石制成的衬底; 第一金刚石层,放置在衬底上,含有杂质; 含有所述杂质的第二金刚石层,所述第二金刚石层被放置在所述基板上并与所述第一金刚石层间隔开; 以及第三金刚石层,其杂质含量小于作为沟道区的第一和第二金刚石层的杂质含量,并且电荷从第一金刚石层转移到第二金刚石层。 第一和第二金刚石层具有彼此面对的第一和第二端部,其间具有空间。 第一和第二端部具有取决于衬底的取向外延形成的斜面。 第三金刚石层位于斜坡上方,并且位于该空间下方的基底部分。