公开(公告)号：US20170204534A1

公开(公告)日：2017-07-20

申请号：US15455339

申请日：2017-03-10

申请人： Masahiro HAYASHI ,  Seiji SARAYAMA ,  Takashi SATOH ,  Hiroshi NAMBU ,  Chiharu KIMURA ,  Naoya MIYOSHI

发明人： Masahiro HAYASHI ,  Seiji SARAYAMA ,  Takashi SATOH ,  Hiroshi NAMBU ,  Chiharu KIMURA ,  Naoya MIYOSHI

IPC分类号： C30B29/40 ,  H01L33/32 ,  H01L33/16 ,  C30B9/12

CPC分类号： C30B29/406 ,  C30B9/12 ,  H01L33/16 ,  H01L33/32

摘要： A gallium nitride crystal having a hexagonal crystal structure, wherein a full width at half maximum (FWHM) of X-ray rocking curve in a region at a side of one edge in a c-axis direction is smaller than the FWHM in a region at a side of the other edge in the c-axis direction, in at least one of m-plane outer peripheral surfaces of the hexagonal crystal structure.

公开(公告)号：US20150247257A1

公开(公告)日：2015-09-03

申请号：US14708583

申请日：2015-05-11

申请人： Masahiro Hayashi ,  Seiji Sarayama ,  Takashi Satoh ,  Hiroshi Nambu ,  Chiharu Kimura ,  Naoya Miyoshi

发明人： Masahiro Hayashi ,  Seiji Sarayama ,  Takashi Satoh ,  Hiroshi Nambu ,  Chiharu Kimura ,  Naoya Miyoshi

IPC分类号： C30B9/12 ,  C30B29/40

CPC分类号： C30B9/12 ,  C30B29/406 ,  Y10T428/239 ,  Y10T428/26

摘要： A gallium nitride crystal having a hexagonal crystal structure includes a first region located on an inner side of a cross section intersecting c-axis of the hexagonal crystal structure, and a second region surrounding at least a part of the outer periphery of the first region in the cross section. An emission spectrum of each of the first region and the second region with electron beam or ultraviolet light excitation has a first peak including a band edge emission of gallium nitride and a second peak located in a longer wavelength area than the first peak. A peak intensity of the first peak is smaller than a peak intensity of the second peak in the first region, and a peak intensity of the first peak is greater than a peak intensity of the second peak in the second region.

摘要翻译： 具有六方晶系结构的氮化镓晶体包括位于与六方晶体结构的c轴交叉的截面的内侧的第一区域，以及包围第一区域的外周的至少一部分的第二区域 横截面。 具有电子束或紫外光激发的第一区域和第二区域中的每一个的发射光谱具有包括氮化镓的带边发射和位于比第一峰的更长波长区域的第二峰的第一峰。 第一峰的峰值强度小于第一区域中的第二峰值的峰值强度，并且第一峰值的峰值强度大于第二区域中的第二峰值的峰值强度。