Method for producing III group element nitride crystal, production apparatus for use therein, and semiconductor element produced thereby
    33.
    发明授权
    Method for producing III group element nitride crystal, production apparatus for use therein, and semiconductor element produced thereby 失效
    生产III族元素氮化物晶体的方法,其中使用的制造装置以及由此制造的半导体元件

    公开(公告)号:US07794539B2

    公开(公告)日:2010-09-14

    申请号:US10599501

    申请日:2005-03-31

    摘要: A method for producing Group-III-element nitride crystals by which an improved growth rate is obtained and large high-quality crystals can be grown in a short time, a producing apparatus used therein, and a semiconductor element obtained using the method and the apparatus are provided. The method is a method for producing Group-III-element nitride crystals that includes a crystal growth process of subjecting a material solution containing a Group III element, nitrogen, and at least one of alkali metal and alkaline-earth metal to pressurizing and heating under an atmosphere of a nitrogen-containing gas so that the nitrogen and the Group III element in the material solution react with each other to grow crystals. The method further includes, prior to the crystal growth process, a material preparation process of preparing the material solution in a manner that under an atmosphere of a nitrogen-containing gas, at least one of an ambient temperature and an ambient pressure is set so as to be higher than is set as a condition for the crystal growth process so that the nitrogen is allowed to dissolve in a melt containing the Group III element and the at least one of alkali metal and alkaline-earth metal. The method according to the present invention can be performed by using, for example, the producing apparatus shown in FIG. 7.

    摘要翻译: 一种生产III族元素的氮化物晶体的方法,其中获得了改善的生长速率并且可以在短时间内生长大量的高质量晶体,其中使用的制造装置以及使用该方法和装置得到的半导体元件 被提供。 该方法是生产III族元素氮化物晶体的方法,其包括使含有III族元素,氮和至少一种碱金属和碱土金属的材料溶液经受加压和加热的晶体生长过程 含氮气体的气氛使得材料溶液中的氮和III族元素彼此反应生长晶体。 该方法还包括在晶体生长过程之前,制备材料制备方法,该方法是在含氮气体的气氛中,将环境温度和环境压力中的至少一种设定为 高于设定为晶体生长过程的条件,使得氮能够溶解在含有III族元素和碱金属和碱土金属中的至少一种的熔体中。 根据本发明的方法可以通过使用例如图1所示的制造装置来执行。 7。

    Apparatus for production of crystal of group III element nitride and process for producing crystal of group III element nitride
    35.
    发明申请
    Apparatus for production of crystal of group III element nitride and process for producing crystal of group III element nitride 有权
    用于生产III族元素氮化物晶体的装置和用于生产III族元素氮化物晶体的方法

    公开(公告)号:US20080213158A1

    公开(公告)日:2008-09-04

    申请号:US12082745

    申请日:2008-04-14

    IPC分类号: C30B23/00 C01B21/06

    摘要: A manufacturing apparatus of Group III nitride crystals and a method for manufacturing Group III nitride crystals are provided, by which high quality crystals can be manufactured. For instance, crystals are grown using the apparatus of the present invention as follows. A crystal raw material (131) and gas containing nitrogen are introduced into a reactor vessel (120), to which heat is applied by a heater (110), and crystals are grown in an atmosphere of pressure applied thereto. The gas is introduced from a gas supplying device (180) to the reactor vessel (120) through a gas inlet of the reactor vessel, and then is exhausted to the inside of a pressure-resistant vessel (102) through a gas outlet of the reactor vessel. Since the gas is introduced directly to the reactor vessel (120) without passing through the pressure-resistant vessel (102), the mixture of impurities attached to the pressure-resistant vessel (102) and the like into the site of the crystal growth can be prevented. Further, since the gas flows through the reactor vessel (120), there is no aggregation of an evaporating alkali metal, etc., at the gas inlet or the like, and such an alkali metal does not flow into the gas supplying device (180). As a result, the quality of Group III nitride crystals obtained can be improved.

    摘要翻译: 提供III族氮化物晶体的制造装置和制造III族氮化物晶体的方法,由此可以制造高质量的晶体。 例如,使用本发明的装置如下生长晶体。 将晶体原料(131)和含氮气体引入反应器容器(120)中,通过加热器(110)向其施加热量,并在施加压力的气氛中生长晶体。 气体通过反应器容器的气体入口从气体供给装置(180)引入反应器容器(120),然后通过反应器的气体出口被排出到耐压容器(102)的内部 反应堆容器。 由于气体不通过耐压容器(102)直接引入反应器容器(120),附着在耐压容器(102)等上的杂质混合物进入晶体生长位置可以 被阻止 此外,由于气体流过反应器容器(120),所以在气体入口等处没有蒸发的碱金属等的聚集,并且这种碱金属不会流入气体供给装置(180 )。 结果,可以提高获得的III族氮化物晶体的质量。

    Process for producing single crystal
    37.
    发明授权
    Process for producing single crystal 有权
    单晶生产工艺

    公开(公告)号:US08486190B2

    公开(公告)日:2013-07-16

    申请号:US12234799

    申请日:2008-09-22

    IPC分类号: C30B9/04

    摘要: A raw material mixture containing an easily oxidizable material is weighed. The raw material mixture is melted and then solidified within a reaction vessel 1 set in a non-oxidizing atmosphere to thereby produce a solidified matter 19. The reaction vessel 1 and the solidified matter 19 are heated in a non-oxidizing atmosphere within a crystal growth apparatus to melt the solidified matter to thereby produce a solution. A single crystal is grown from the solution.

    摘要翻译: 称量含有容易氧化的材料的原料混合物。 将原料混合物熔化,然后在设置在非氧化性气氛中的反应容器1内固化,从而产生固化物19.反应容器1和固化物19在晶体生长中的非氧化性气氛中加热 熔化固化物从而产生溶液的装置。 从溶液中生长单晶。

    Method for producing group III nitride-based compound semiconductor
    38.
    发明授权
    Method for producing group III nitride-based compound semiconductor 有权
    制备III族氮化物基化合物半导体的方法

    公开(公告)号:US08361222B2

    公开(公告)日:2013-01-29

    申请号:US12081943

    申请日:2008-04-23

    摘要: In the production of GaN through the flux method, deposition of miscellaneous crystals on the nitrogen-face of a GaN self-standing substrate and waste of raw materials are prevented. Four arrangements of crucibles and a GaN self-standing substrate are exemplified. In FIG. 1A, a nitrogen-face of a self-standing substrate comes into close contact with a sloped flat inner wall of a crucible. In FIG. 1B, a nitrogen-face of a self-standing substrate comes into close contact with a horizontally facing flat inner wall of a crucible, and the substrate is fixed by means of a jig. In FIG. 1C, a jig is provided on a flat bottom of a crucible, and two GaN self-standing substrates are fixed by means of the jig so that the nitrogen-faces of the substrates come into close contact with each other. In FIG. 1D, a jig is provided on a flat bottom of a crucible, and a GaN self-standing substrate is fixed on the jig so that the nitrogen-face of the substrate is covered with the jig. A flux mixture of molten gallium and sodium is charged into each crucible, and a GaN single crystal is grown on a gallium-face under pressurized nitrogen.

    摘要翻译: 在通过助熔剂制造GaN的情况下,可以防止在GaN自立基板的氮面上沉积杂晶,原料的浪费。 例示了四个坩埚和GaN自立衬底的布置。 在图 如图1A所示,自立基板的氮面与坩埚的倾斜的平坦的内壁紧密接触。 在图 如图1B所示,自立基板的氮面与坩埚的水平方向的平坦的内壁紧密接触,通过夹具固定基板。 在图 如图1C所示,在坩埚的平坦底部设置夹具,通过夹具固定两个GaN自立基板,使得基板的氮面彼此紧密接触。 在图 如图1D所示,在坩埚的平坦底部设置夹具,并且将GaN自立基板固定在夹具上,使得基板的氮面被夹具覆盖。 将熔融的镓和钠的助熔剂混合物装入每个坩埚中,并且在加压氮气下在镓面上生长GaN单晶。