Compound semiconductor device and method of manufacturing the same
    3.
    发明授权
    Compound semiconductor device and method of manufacturing the same 有权
    化合物半导体器件及其制造方法

    公开(公告)号:US08426260B2

    公开(公告)日:2013-04-23

    申请号:US13294726

    申请日:2011-11-11

    IPC分类号: H01L21/338 H01L29/66

    摘要: A compound semiconductor device includes: an electron transport layer formed over a substrate; an electron supply layer formed over the electron transport layer; and a cap layer formed over the electron supply layer; the cap layer includes a first compound semiconductor layer containing GaN; a second compound semiconductor layer containing AlN, which is formed over the first compound semiconductor layer; a third compound semiconductor layer containing GaN, which is formed over the second compound semiconductor layer; and at least one of a first AlGaN-containing layer and a second AlGaN-containing layer, with the first AlGaN-containing layer formed between the first compound semiconductor layer and the second compound semiconductor layer and the Al content increases toward the second compound semiconductor layer, and the second AlGaN-containing layer formed between the second compound semiconductor layer and the third compound semiconductor layer and the Al content increases toward the second compound semiconductor layer.

    摘要翻译: 化合物半导体器件包括:形成在衬底上的电子传输层; 形成在电子传输层上的电子供应层; 以及形成在所述电子供给层上的盖层; 盖层包括含有GaN的第一化合物半导体层; 含有AlN的第二化合物半导体层,其形成在所述第一化合物半导体层上; 含有GaN的第三化合物半导体层,其形成在所述第二化合物半导体层上; 以及第一AlGaN含有层和第二含AlGaN的层中的至少一个,其中形成在第一化合物半导体层和第二化合物半导体层之间的第一AlGaN含有层,并且Al含量朝向第​​二化合物半导体层增加 并且形成在第二化合物半导体层和第三化合物半导体层之间的第二AlGaN含量层和Al含量朝向第​​二化合物半导体层增加。

    Compound semiconductor device and method of manufacturing the same
    8.
    发明授权
    Compound semiconductor device and method of manufacturing the same 有权
    化合物半导体器件及其制造方法

    公开(公告)号:US08357602B2

    公开(公告)日:2013-01-22

    申请号:US12886822

    申请日:2010-09-21

    IPC分类号: H01L21/3205 H01L21/461

    摘要: An intermediate layer composed of i-AlN is formed between a channel layer and an electron donor layer, a first opening is formed in an electron donor layer, at a position where a gate electrode will be formed later, while using an intermediate layer as an etching stopper, a second opening is formed in the intermediate layer so as to be positionally aligned with the first opening, by wet etching using a hot phosphoric acid solution, and a gate electrode is formed so that the lower portion thereof fill the first and second openings while placing a gate insulating film in between, and so that the head portion thereof projects above the cap structure.

    摘要翻译: 在沟道层和电子给体层之间形成由i-AlN构成的中间层,在电子供体层中形成第一开口,在稍后将形成栅电极的位置,同时使用中间层作为 蚀刻停止器,通过使用热磷酸溶液的湿蚀刻,在中间层中形成第二开口以与第一开口位置对准,并且形成栅电极,使得其下部填充第一和第二 开口,同时将栅极绝缘膜放置在其间,并且使得其头部突出在盖结构的上方。

    Semiconductor device manufacturing method
    9.
    发明申请
    Semiconductor device manufacturing method 有权
    半导体器件制造方法

    公开(公告)号:US20100311233A1

    公开(公告)日:2010-12-09

    申请号:US12805506

    申请日:2010-08-03

    IPC分类号: H01L21/28

    摘要: In an MIS-type GaN-FET, a base layer made of a conductive nitride including no oxygen, here, TaN, is provided on a surface layer as a nitride semiconductor layer to cover at least an area of a lower face of a gate insulation film made of Ta2O5 under a gate electrode.

    摘要翻译: 在MIS型GaN-FET中,作为氮化物半导体层,在作为氮化物半导体层的表面层上设置由不含氧的导电性氮化物构成的基底层Ta N,以覆盖栅极绝缘体的下表面的至少一部分 由Ta2O5制成的薄膜在栅电极下。