GALLIUM NITRIDE SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
    61.
    发明申请
    GALLIUM NITRIDE SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF 有权
    氮化镓半导体器件及其制造方法

    公开(公告)号:US20090085166A1

    公开(公告)日:2009-04-02

    申请号:US12243201

    申请日:2008-10-01

    Inventor: Noriyuki IWAMURO

    Abstract: A gallium nitride semiconductor device is disclosed that can be made by an easy manufacturing method. The device includes a silicon substrate, buffer layers formed on the top surface of the silicon substrate, and gallium nitride grown layers formed thereon. The silicon substrate has trenches 12 formed from the bottom surface, each trench having a depth reaching the gallium nitride grown layer through the silicon substrate and the buffer layers. The inside surface of each of the trenches and the bottom surface of the silicon substrate is covered with a drain electrode as a metal film. The vertical gallium nitride semiconductor device with this structure allows an electric current to flow in the direction of the thickness of the silicon substrate regardless of the resistance values of the gallium nitride grown layers and the buffer layers.

    Abstract translation: 公开了可以通过简单的制造方法制造的氮化镓半导体器件。 该器件包括硅衬底,形成在硅衬底的顶表面上的缓冲层和形成在其上的氮化镓生长层。 硅衬底具有从底表面形成的沟槽12,每个沟槽具有通过硅衬底和缓冲层到达氮化镓生长层的深度。 每个沟槽的内表面和硅衬底的底表面被作为金属膜的漏电极覆盖。 具有这种结构的垂直氮化镓半导体器件允许电流在硅衬底的厚度方向上流动,而与氮化镓生长层和缓冲层的电阻值无关。

    Method for doping quantum dots
    66.
    发明授权
    Method for doping quantum dots 有权
    掺杂量子点的方法

    公开(公告)号:US07192850B2

    公开(公告)日:2007-03-20

    申请号:US11024801

    申请日:2004-12-30

    Abstract: A doping method for forming quantum dots is disclosed, which includes following steps: providing a first precursor solution for a group II element and a second precursor solution for a group VI element; heating and mixing the first precursor solution and the second precursor solution for forming a plurality of II–VI compound cores of the quantum dots dispersing in a melting mixed solution; and injecting a third precursor solution for a group VI element and a forth precursor solution with at least one dopant to the mixed solution in turn at a fixed time interval in order to form quantum dots with multi-shell dopant; wherein the dopant described here is selected from a group consisting of transitional metal and halogen elements. This method of the invention can dope the dopants in the inner quantum dot and enhance the emission intensity efficiently.

    Abstract translation: 公开了一种用于形成量子点的掺杂方法,其包括以下步骤:为第Ⅵ族元素提供第一前体溶液和为Ⅵ族元素提供第二前体溶液; 加热和混合第一前体溶液和第二前体溶液,以形成分散在熔融混合溶液中的量子点的多个II-VI化合物核心; 并且以固定的时间间隔依次向所述混合溶液中注入具有至少一种掺杂剂的第Ⅵ族元素和第四前体溶液的第三前体溶液,以形成具有多壳掺杂剂的量子点; 其中这里描述的掺杂剂选自由过渡金属和卤素元素组成的组。 本发明的这种方法可以掺杂在内量子点中并有效地提高发射强度。

    Heterojunction tunneling diodes and process for fabricating same
    68.
    发明授权
    Heterojunction tunneling diodes and process for fabricating same 有权
    异质结隧道二极管及其制造方法

    公开(公告)号:US07105866B2

    公开(公告)日:2006-09-12

    申请号:US10911624

    申请日:2004-08-05

    Abstract: High quality epitaxial layers of compound semiconductor materials can be grown overlying large silicon wafers by first growing an accommodating buffer layer on a silicon wafer. The accommodating buffer layer is a layer of monocrystalline oxide spaced apart from the silicon wafer by an amorphous interface layer of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. Any lattice mismatch between the accommodating buffer layer and the underlying silicon substrate is taken care of by the amorphous interface layer.

    Abstract translation: 通过首先在硅晶片上生长容纳缓冲层,可以将复合半导体材料的高质量外延层生长在大的硅晶片上。 容纳缓冲层是通过氧化硅的非晶界面层与硅晶片间隔开的单晶氧化物层。 非晶界面层消耗应变并允许高质量单晶氧化物容纳缓冲层的生长。 通过非晶界面层处理容纳缓冲层和底层硅衬底之间的任何晶格失配。

    Gallium nitride semiconductor and method of manufacturing the same
    70.
    发明申请
    Gallium nitride semiconductor and method of manufacturing the same 有权
    氮化镓半导体及其制造方法

    公开(公告)号:US20060145187A1

    公开(公告)日:2006-07-06

    申请号:US11302957

    申请日:2005-12-13

    Applicant: Yong Kim Dong Lee

    Inventor: Yong Kim Dong Lee

    Abstract: The present invention provides to a gallium nitride (GaN) semiconductor and a method of manufacturing the same, capable of reducing crystal defects caused by a difference in lattice parameters, and minimizing internal residual stress. In particular, since a high-quality GaN thin film is formed on a silicon wafer, manufacturing costs can be reduced by securing high-quality wafers with a large diameter at a low price, and applicability to a variety of devices and circuit can also be improved.

    Abstract translation: 本发明提供一种氮化镓(GaN)半导体及其制造方法,其能够减少由晶格参数的差异引起的晶体缺陷,并使内部残余应力最小化。 特别地,由于在硅晶片上形成高质量的GaN薄膜,所以可以通过以较低的价格确保大直径的高品质晶片来降低制造成本,并且适用于各种器件和电路也可以 改进。

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