Methods of forming zinc oxide based II-VI compound semiconductor layers with shallow acceptor conductivities

    公开(公告)号:US07829376B1

    公开(公告)日:2010-11-09

    申请号:US12755499

    申请日:2010-04-07

    IPC分类号: H01L21/00

    摘要: A p-type ZnO-based II-VI compound semiconductor layer has silver, potassium and/or gold dopants therein at a net p-type dopant concentration of greater than about 1×1017 cm−3. A method of forming the layer includes using an atomic layer deposition (ALD) technique. This technique includes exposing a substrate to a combination of gases: a first reaction gas containing zinc at a concentration that is repeatedly transitioned between at least two concentration levels during a processing time interval, a second reaction gas containing oxygen and a p-type dopant gas containing at least one p-type dopant species selected from a group consisting of silver, potassium and gold. A concentration of oxygen in the second reaction gas may also be repeatedly transitioned between at least two concentration levels. The concentration of zinc in the first reaction gas and the concentration of oxygen in the second reaction gas may be transitioned in an alternating sequence, so that relatively high zinc concentrations in the first reaction gas overlap with relatively low oxygen concentrations in the second reaction gas and vice versa.

    METHOD FOR MANUFACTURING GALLIUM NITRIDE CRYSTAL AND GALLIUM NITRIDE WAFER
    32.
    发明申请
    METHOD FOR MANUFACTURING GALLIUM NITRIDE CRYSTAL AND GALLIUM NITRIDE WAFER 有权
    制造氮化镓晶体和氮化铝膜的方法

    公开(公告)号:US20090194848A1

    公开(公告)日:2009-08-06

    申请号:US12298332

    申请日:2007-04-24

    IPC分类号: H01L29/20 H01L21/20

    摘要: There is provided a method for fabricating a gallium nitride crystal with low dislocation density, high crystallinity, and resistance to cracking during polishing of sliced pieces by growing the gallium nitride crystal using a gallium nitride substrate including dislocation-concentrated regions or inverted-polarity regions as a seed crystal substrate. Growing a gallium nitride crystal 79 at a growth temperature higher than 1,100° C. and equal to or lower than 1,300° C. so as to bury dislocation-concentrated regions or inverted-polarity regions 17a reduces dislocations inherited from the dislocation-concentrated regions or inverted regions 17a, thus preventing new dislocations from occurring over the dislocation-concentrated regions or inverted-polarity regions 17a. This also increases the crystallinity of the gallium nitride crystal 79 and its resistance to cracking during the polishing.

    摘要翻译: 提供了通过使用包括位错集中区域或反极性区域的氮化镓衬底生长氮化镓晶体来制造在切片的研磨期间具有低位错密度,高结晶度和耐龟裂性的氮化镓晶体的方法, 晶种基片。 在高于1100℃并且等于或低于1300℃的生长温度下生长氮化镓晶体79,以便掩埋位错集中区域或反极性区域17a减少从位错集中区域遗留的位错或 反转区域17a,从而防止在位错集中区域或反极性区域17a上发生新的位错。 这也增加了氮化镓晶体79的结晶度及其在抛光过程中的抗开裂性。

    Method for manufacturing znte compound semiconductor single crystal znte compound semiconductor single crystal, and semiconductor device
    34.
    发明申请
    Method for manufacturing znte compound semiconductor single crystal znte compound semiconductor single crystal, and semiconductor device 失效
    制造半导体单晶半导体单晶半导体单晶的方法及半导体器件

    公开(公告)号:US20040155255A1

    公开(公告)日:2004-08-12

    申请号:US10472446

    申请日:2004-03-31

    摘要: The present invention relates to a method for producing an n-type ZnTe system compound semiconductor single crystal having high carrier concentration and low resistivity, the ZnTe system compound semiconductor single crystal, and a semiconductor device produced by using the ZnTe system compound semiconductor as a base member. Concretely, a first dopant and a second dopant are co-doped into the ZnTe system compound semiconductor single crystal so that the number of atoms of the second dopant becomes smaller than the number of atoms of the first dopant, the first dopant being for controlling a conductivity type of the ZnTe system compound semiconductor to a first conductivity type, and the second dopant being for controlling the conductivity type to a second conductivity type different from the first conductivity type. By the present invention, a desired carrier concentration can be achieved with a doping amount smaller than in earlier technology, and crystallinity of the obtained crystal can be improved.

    摘要翻译: 本发明涉及一种具有高载流子浓度和低电阻率的n型ZnTe系化合物半导体单晶的制造方法,ZnTe系化合物半导体单晶以及使用ZnTe系化合物半导体作为基底制造的半导体装置 会员。 具体地,第一掺杂剂和第二掺杂剂共掺杂到ZnTe系化合物半导体单晶中,使得第二掺杂剂的原子数小于第一掺杂剂的原子数,第一掺杂剂用于控制 ZnTe系化合物半导体的导电类型为第一导电类型,第二掺杂剂用于将导电类型控制为不同于第一导电类型的第二导电类型。 通过本发明,可以实现与早期技术相比掺杂量小的期望载流子浓度,并且可以提高所得晶体的结晶度。