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    • 4. 发明申请
    • COMPOUND SEMICONDUCTOR STRUCTURE
    • 化合物半导体结构
    • US20090065787A1
    • 2009-03-12
    • US12248357
    • 2008-10-09
    • Toshihide KIKKAWAKenji IMANISHI
    • Toshihide KIKKAWAKenji IMANISHI
    • H01L29/205H01L29/778H01L21/336
    • H01L29/7787H01L21/02378H01L21/02425H01L21/02458H01L21/0254H01L21/0262H01L29/2003H01L29/66462
    • A method for manufacturing a compound semiconductor structure, includes (a) selecting a conductive SiC substrate in accordance with color and resistivity and (b) epitaxially growing a GaN series compound semiconductor layer on the selected conductive SiC substrate. The step (a) preferably selects a conductive SiC substrate whose main color is green, whose conductivity type is n-type and whose resistivity is 0.08 Ωcm to 1×105 Ωcm, or whose main color is black, whose conductivity type is p-type and whose resistivity is 1×103 Ωcm to 1×105 Ωcm, or whose main color is blue, whose conductivity type is p-type and whose resistivity is 10 Ωcm to 1×105 Ωcm. The step (b) preferably includes (b-1) growing an AlInGaN layer having a thickness not thinner than 10 μm on the conductive SiC substrate by hydride VPE.
    • 一种化合物半导体结构的制造方法,包括:(a)根据颜色和电阻率选择导电性SiC基板,(b)在选择的导电性SiC基板上外延生长GaN系化合物半导体层。 步骤(a)优选选择导电类型为n型,电导率为0.08Ωg至1×1050Ωg的主颜色为绿色的导电性SiC衬底,或其主要颜色为黑色,导电类型为p型,其导电类型为 电阻率为1×10 3Ω·mol〜1×10 5Ω·cm,或其主要颜色为蓝色,其导电类型为p型,电阻率为10Ω·cm〜1×10-5Ω·cm。 步骤(b)优选包括(b-1)在导电SiC衬底上通过氢化物VPE生长具有不薄于10μm的厚度的AlInGaN层。
    • 7. 发明申请
    • COMPOUND SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
    • 化合物半导体器件及其制造方法
    • US20120138948A1
    • 2012-06-07
    • US13294726
    • 2011-11-11
    • Toyoo MIYAJIMAToshihide KIKKAWAKenji IMANISHIToshihiro OHKIMasahito KANAMURA
    • Toyoo MIYAJIMAToshihide KIKKAWAKenji IMANISHIToshihiro OHKIMasahito KANAMURA
    • H01L29/778H01L21/20
    • H01L29/66462H01L29/2003H01L29/4236H01L29/7787
    • 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.
    • 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。