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    • 11. 发明授权
    • Method for manufacturing gallium nitride single crystalline substrate using self-split
    • 使用自分割制造氮化镓单晶衬底的方法
    • US07723217B2
    • 2010-05-25
    • US12332198
    • 2008-12-10
    • Ho-Jun LeeDoo-Soo KimDong-Kun LeeYong-Jin Kim
    • Ho-Jun LeeDoo-Soo KimDong-Kun LeeYong-Jin Kim
    • H01L21/20
    • C30B29/406C30B25/18
    • The present invention relates to a method for manufacturing a gallium nitride single crystalline substrate, including (a) growing a gallium nitride film on a flat base substrate made of a material having a smaller coefficient of thermal expansion than gallium nitride and cooling the gallium nitride film to bend convex upwards the base substrate and the gallium nitride film and create cracks in the gallium nitride film; (b) growing a gallium nitride single crystalline layer on the crack-created gallium nitride film located on the convex upward base substrate; and (c) cooling a resultant product having the grown gallium nitride single crystalline layer to make the convex upward resultant product flat or bend convex downwards the convex upward resultant product and at the same time to self-split the base substrate and the gallium nitride single crystalline layer from each other at the crack-created gallium nitride film interposed therebetween.
    • 本发明涉及一种用于制造氮化镓单晶衬底的方法,包括(a)在具有比氮化镓更小的热膨胀系数的材料制成的平坦基底衬底上生长氮化镓膜并冷却氮化镓膜 使基底和氮化镓膜向上弯曲并在氮化镓膜中产生裂纹; (b)在位于凸起的上方的基底基板上的裂纹产生的氮化镓膜上生长氮化镓单晶层; 和(c)冷却具有生长的氮化镓单晶层的所得产物,以使凸起的上升产物平坦或向上凸起向上凸起的产生产物,同时使基底和氮化镓单层自分裂 在其间形成的裂纹产生的氮化镓膜彼此相互结合。