摘要:
[Object]The present invention provides a method of selectively forming a flat plane on an atomic level on a diamond (001), (110) or (111) surface.[Means for Solving Problems]A method of selectively forming a flat plane on a diamond surface comprising growing diamond on a stepped diamond surface of any of crystal structures (001), (110) and (111) by CVD (Chemical Vapor Deposition) under growth conditions such that step-flow growth of diamond is carried out thereafter.
摘要:
The present invention provides a method of selectively forming a flat plane on an atomic level on a diamond (001), (110) or (111) surface.A method of selectively forming a flat plane on a diamond surface comprising growing diamond on a stepped diamond surface of any of crystal structures (001), (110) and (111) by CVD (Chemical Vapor Deposition) under growth conditions such that step-flow growth of diamond is carried out thereafter.
摘要:
In this junction element 1, when a forward voltage is applied, a depletion layer is formed in a semiconductor layer 2, prohibiting electrons present in an electrode layer 4 to move into the semiconductor layer 2. For this reason, a majority of holes in a semiconductor layer 3 do not disappear by recombination with conduction electrons in the semiconductor layer 2, but reach the electrode layer 4 while diffusing into the semiconductor layer 2. Accordingly, the junction element 1 can serve as a good conductor for holes, while avoiding the influence of a resistance value, and allows a current to flow therethrough at a level equal to or more than that achieved by a semiconductor element formed of a Si or SiC semiconductor. The present invention is applicable to any semiconductor material in which at least one of a donor level and an acceptor level is located at a sufficiently deep position beyond a thermal excitation energy at an operating temperature, such as diamond, zinc oxide (ZnO), aluminum nitride (AlN), or boron nitride (BN). The present invention is also applicable to even a material having a shallow impurity level at room temperature, such as silicon (Si), silicon carbide (SiC), gallium nitride (GaN), gallium arsenide (GaAs), or germanium (Ge), as long as operation is performed at such a low temperature that the thermal excitation energy can be sufficiently small.
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.
摘要:
In this junction element 1, when a forward voltage is applied, a depletion layer is formed in a semiconductor layer 2, prohibiting electrons present in an electrode layer 4 to move into the semiconductor layer 2. For this reason, a majority of holes in a semiconductor layer 3 do not disappear by recombination with conduction electrons in the semiconductor layer 2, but reach the electrode layer 4 while diffusing into the semiconductor layer 2. Accordingly, the junction element 1 can serve as a good conductor for holes, while avoiding the influence of a resistance value, and allows a current to flow therethrough at a level equal to or more than that achieved by a semiconductor element formed of a Si or SiC semiconductor. The present invention is applicable to any semiconductor material in which at least one of a donor level and an acceptor level is located at a sufficiently deep position beyond a thermal excitation energy at an operating temperature, such as diamond, zinc oxide (ZnO), aluminum nitride (AlN), or boron nitride (BN). The present invention is also applicable to even a material having a shallow impurity level at room temperature, such as silicon (Si), silicon carbide (SiC), gallium nitride (GaN), gallium arsenide (GaAs), or germanium (Ge), as long as operation is performed at such a low temperature that the thermal excitation energy can be sufficiently small.
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.
摘要:
There is provided an n type (100) oriented single crystal diamond semiconductor film into which phosphorous atoms have been doped and a method of producing the same. The n type (100) oriented single crystal diamond semiconductor film, characterized in that (100) oriented diamond is epitaxially grown on a substrate under such conditions that; the diamond substrate is (100) oriented diamond, a means for chemical vapor deposition provides hydrogen, hydrocarbon and a phosphorous compound in the plasma vapor phase, the ratio of phosphorous atoms to carbon atoms in the plasma vapor phase is no less than 0.1%, and the ratio of carbon atoms to hydrogen atoms is no less than 0.05%, and the method of producing the same.
摘要:
The present invention provides a clear resin molded body which has high heat resistance that can be used in the reflow soldering process using Pb-free solder, which has high transparency that can be used for an optical member, and which can be easily produced, and also provides a method of producing the same.A clear resin molded body includes a molded body of a resin composition composed of a carbon-hydrogen-bond-containing fluororesin, in which the resin composition is crosslinked by irradiating the molded body with ionizing radiation at least once in an atmosphere at a temperature lower than the melting point of the fluororesin and at least once in an atmosphere at a temperature equal to or higher than the melting point of the fluororesin. A method produces the clear resin molded body.
摘要:
Disclosed is a granular polyurethane resin composition containing a thermoplastic polyurethane resin which contains a hard segment obtained by a reaction between a polyisocyanate and a chain extender. The polyisocyanate contains isocyanate groups of 1,4-bis(isocyanatomethyl)cyclohexane in an amount of not less than 50% by more relative to the total mole number of isocyanate groups.
摘要:
A head cap for an aerosol type atomizer is proposed in which a residual gas that remains in the container after the use of the aerosol type atomizer is ended are discharged easily and safely, and which is so structured that the aerosol type atomizer cannot be falsely operated while it is being used. It comprises a cap body mounted over a top of a container accommodating its contents, and a movable member for spray operation disposed inside of the cap body and having a fluid channel extending from a stem fitting part for fitting with a stem and leading to a spray port, the movable member for spray operation having a push button such that pushing down the push button to take a spray position sprays contents of the container from the spray port via the fluid channel, wherein the cap body has a side face elastically deformable so that when the push button of the movable member for spray operation is pushed down to take the spray position, pressing the side face of the cap body inwards locks the movable member for spray operation with the side face to hold the movable member for spray operation at the spray position.