公开(公告)号：US20100314625A1

公开(公告)日：2010-12-16

申请号：US12797617

申请日：2010-06-10

申请人： Hideaki NAKAHATA ,  Shinsuke FUJIWARA ,  Takashi SAKURADA ,  Yoshiyuki YAMAMOTO ,  Seiji NAKAHATA ,  Tomoki UEMURA

发明人： Hideaki NAKAHATA ,  Shinsuke FUJIWARA ,  Takashi SAKURADA ,  Yoshiyuki YAMAMOTO ,  Seiji NAKAHATA ,  Tomoki UEMURA

IPC分类号： H01L29/20 ,  H01L21/20 ,  C01B21/06 ,  C30B23/00

CPC分类号： H01L29/872 ,  C30B25/00 ,  C30B29/406 ,  H01L21/02008 ,  H01L21/0237 ,  H01L21/0254 ,  H01L21/0262 ,  H01L29/2003 ,  H01L29/205

摘要： Affords a GaN single-crystal mass, a method of its manufacture, and a semiconductor device and method of its manufacture, whereby when the GaN single-crystal mass is being grown, and when the grown GaN single-crystal mass is being processed into a substrate or like form, as well as when an at least single-lamina semiconductor layer is being formed onto a single-crystal GaN mass in substrate form to manufacture semiconductor devices, cracking is controlled to a minimum. The GaN single-crystal mass 10 has a wurtzitic crystalline structure and, at 30° C., its elastic constant C11 is from 348 GPa to 365 GPa and its elastic constant C13 is from 90 GPa to 98 GPa; alternatively its elastic constant C11 is from 352 GPa to 362 GPa.

摘要翻译： 提供GaN单晶体，其制造方法以及其制造的半导体器件及其制造方法，由此当生长GaN单晶质量时，并且当将生长的GaN单晶体块加工成 衬底或类似形式，以及当至少单层GaN半导体层以衬底形式形成在单晶GaN块上以制造半导体器件时，将裂纹控制到最小。 GaN单晶块10具有纤锌矿结晶结构，在30℃下，其弹性常数C11为348GPa至365GPa，其弹性常数C13为90GPa至98GPa; 或者其弹性常数C11为352GPa至362GPa。

公开(公告)号：US20120164058A1

公开(公告)日：2012-06-28

申请号：US13402131

申请日：2012-02-22

申请人： Tomoki UEMURA ,  Takashi SAKURADA ,  Shinsuke FUJIWARA ,  Takuji OKAHISA ,  Koji UEMATSU ,  Hideaki NAKAHATA

发明人： Tomoki UEMURA ,  Takashi SAKURADA ,  Shinsuke FUJIWARA ,  Takuji OKAHISA ,  Koji UEMATSU ,  Hideaki NAKAHATA

IPC分类号： C01B21/06 ,  C30B19/12 ,  C30B23/02

CPC分类号： H01L21/02623 ,  C30B25/186 ,  C30B25/20 ,  C30B29/406 ,  H01L21/02389 ,  H01L21/0254 ,  H01L21/0262 ,  H01L21/02658

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。