摘要:
The present application relates to a self-standing GaN substrate with an angle between the normal of the principal surface and an m-axis of 0 degrees or more and 20 degrees or less, preferably having (i) an defect increasing zone extending in a direction intersecting an A-plane on the principal surface, wherein: the size of the projected image in a c-axis direction when the principal surface is vertically projected on an M-plane is 10 mm or more; when a region excluding a portion at a distance of 2 mm or less from a substrate end surface, of the principal surface, is assumed to be an effective region, an X-ray rocking curve full-width at half-maximum of a (300) plane on a longest intersection line formable by the principal surface and an A-plane in the effective region is less than 100 arcsec, or in case of (i) an X-ray rocking curve full-width at half-maximum of a (300) plane on a longest intersection line formable by the principal surface and the A-plane in the effective region is less than 100 arcsec in a portion excluding the defect increasing zone; and a variation width of the X-ray rocking curve full-width at half-maximum of a (300) plane on the longest intersection line is less than 20 arcsec, or in the case of (i) a variation width of the X-ray rocking curve full-width at half-maximum of a (300) plane on the longest intersection line is less than 20 arcsec in a portion excluding the defect increasing zone.
摘要:
Provided is a high-quality Group III nitride crystal of excellent processability. A Group III nitride crystal is produced by forming a film is composed of an oxide, hydroxide and/or oxyhydroxide containing a Group III element by heat-treating a Group III nitride single crystal at 1000°C or above, and removing the film.
摘要:
There is disclosed a hexagonal Group III-V nitride layer exhibiting high quality crystallinity capable of improving the properties of a semiconductor device such as a light emitting element. This nitride layer is a Group III-V nitride layer belonging to hexagonal crystal formed by growth on a substrate having a different lattice constant, which has a growth-plane orientation of {1-100} and in which a full width at half maximum b 1 of angle dependence of X-ray diffraction intensity in a {1-210} plane perpendicular to the growth-plane upon X ray incident angle from a direction parallel to the growth-plane satisfies the condition of 0.01°≤ b 1 ≤ 0.5°, or the full width at half maximum b 2 of angle dependence of X-ray diffraction intensity in a {0001} plane upon X-ray incident angle from a direction parallel to the growth-plane satisfies the condition of 0.01°≤ b 2 ≤ 0.5°.
摘要翻译:公开了能够提高诸如发光元件的半导体器件的性能的显示高质量结晶度的六边形III-V族氮化物层。 该氮化物层是属于六方晶的III-V族氮化物层,其通过在具有不同晶格常数的基板上生长形成,其具有{1-100}的生长面取向,并且其中半峰全宽 从与生长面平行的方向的X射线入射角垂直于生长面的{1-210}面的X射线衍射强度的角度依赖性的1满足条件为0.01°‰b 1‰¤ 或者从与生长面平行的方向的X射线入射角,{0001}面内的X射线衍射强度的角度依赖性的半值的全宽度b 2满足条件为0.01°‰¤ b 2‰¤0.5°。
摘要:
An object is to provide a nonpolar or semipolar GaN substrate having improved size and crystal quality. A self-standing GaN substrate has an angle between the normal of the principal surface and an m-axis of 0 degrees or more and 20 degrees or less, wherein: the size of the projected image in a c-axis direction when the principal surface is vertically projected on an M-plane is 10 mm or more; and when an a-axis length is measured on an intersection line between the principal surface and an A-plane, a low distortion section with a section length of 6 mm or more and with an a-axis length variation within the section of 10.0 × 10 -5 Å or less is observed.
摘要:
A periodic table Group 13 metal nitride crystals grown with a non-polar or semi-polar principal surface have numerous stacking faults. The purpose of the present invention is to provide a period table Group 13 metal nitride crystal wherein the occurrence of stacking faults of this kind are suppressed. The present invention achieves the foregoing by a periodic table Group 13 metal nitride crystal being characterized in that, in a Qx direction intensity profile that includes a maximum intensity and is derived from an isointensity contour plot obtained by x-ray reciprocal lattice mapping of (100) plane of the periodic table Group 13 metal nitride crystal, a Qx width at 1/300th of peak intensity is 6x10 -4 rlu or less.
摘要:
Provided is a high-quality Group III nitride crystal of excellent processability. A Group III nitride crystal is produced by forming a film is composed of an oxide, hydroxide and/or oxyhydroxide containing a Group III element by heat-treating a Group III nitride single crystal at 1000°C or above, and removing the film.