摘要:
A diamond crystal according to the present invention has an NV region containing a complex (NV center) of nitrogen substituted with a carbon atom and a vacancy located adjacent to the nitrogen, on a surface or in the vicinity of the surface, wherein the NV region has a donor concentration equal to or higher than the concentration of the NV centers, or a crystal of the NV region is a {111} face or a face having an off-angle that is ±10 degrees or less against the {111} face, and a principal axis of the NV center is a axis that is perpendicular to the {111} face. Such a diamond crystal enables almost 100% of the NV center to be a state (NV - ) of having a negative electric charge, and spin states of the NV - centers to be aligned in one direction.
摘要:
A diamond crystal according to the present invention has an NV region containing a complex (NV center) of nitrogen substituted with a carbon atom and a vacancy located adjacent to the nitrogen, on a surface or in the vicinity of the surface, wherein the NV region has a donor concentration equal to or higher than the concentration of the NV centers, or a crystal of the NV region is a {111} face or a face having an off-angle that is ±10 degrees or less against the {111} face, and a principal axis of the NV center is a axis that is perpendicular to the {111} face. Such a diamond crystal enables almost 100% of the NV center to be a state (NV - ) of having a negative electric charge, and spin states of the NV - centers to be aligned in one direction.
摘要:
The present invention provides a method for manufacturing a diamond substrate, the method being a method for producing a (111) oriented diamond crystal on an underlying substrate by epitaxial growth using hydrogen-diluted methane as a main source gas by a microwave plasma CVD method, a direct current plasma CVD method, a hot-filament CVD method, or an arc discharge plasma jet CVD method, in which a growth rate is less than 3.8 µm / h. Thereby, a diamond crystal applicable to an electronic and magnetic device and a method to produce this crystal are stably provided in which the crystal with the NV axis with [111] orientation and high-density NVC obtained by the CVD method under a predetermined condition is grown on a highly oriented (111) diamond base substrate obtained by the CVD method also under a predetermined condition.
摘要:
Provided is a light emitting device formed of an indirect transition semiconductor configured from a semiconductor material having high exciton binding energy, wherein an active layer of the indirect transition semiconductor or an active region by a pn junction is formed, the light emitting device has an electrode for injecting current into the active layer or the active region, and the internal quantum efficiency is 10% or more.