III족 질화물 결정의 제조 방법, III족 질화물 결정 기판 및 III족 질화물 반도체 디바이스
    13.
    发明公开
    III족 질화물 결정의 제조 방법, III족 질화물 결정 기판 및 III족 질화물 반도체 디바이스 有权
    用于生产III族氮化物晶体,III族氮化物晶体基板和III族氮化物半导体器件的方法

    公开(公告)号:KR1020090101074A

    公开(公告)日:2009-09-24

    申请号:KR1020087024610

    申请日:2007-11-15

    Abstract: This invention provides a process for producing a large-size group III nitride crystal in which the dislocation density of at least the surface thereof is wholly low. The production process is characterized in that it comprises the step of providing a base substrate (1) comprising a group III nitride seed crystal having a main area (1s) and a polarity reversed area (1t) having polarity reversed in direction to the main area (1s), and the step of growing a group III nitride crystal (10) by a liquid phase method on the main area (1s) and the polarity reversed area (1t) in the base substrate (1), and a first area (10s) having a higher growth rate of the group III nitride crystal (10) grown on the main area (1s) covers a second area (10t) having a lower growth rate of the group III nitride crystal (10) grown on the polarity reversed area (1t).

    Abstract translation: 本发明提供一种制造其中至少其表面的位错密度完全低的大尺寸III族氮化物晶体的方法。 制造方法的特征在于,其特征在于,包括提供包括主要区域(1s)和极性反转区域(1t)的III族氮化物晶种的基底(1)的步骤,所述III族氮化物晶体的极性反转方向与主区域 (1s)和基底基板(1)中的主区域(1)和极性反转区域(1t)上的液相法生长III族氮化物晶体(10)的步骤,以及第一区域 在主区域(1s)上生长的III族氮化物晶体(10)的生长速度更高的第二区域(10t)覆盖在极性反转上生长的III族氮化物晶体(10)生长速率较低的第二区域(10t) 区域(1t)。

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