Abstract:
PROBLEM TO BE SOLVED: To classify the superfine particles of nm level by excellent resolvality in a disk type superfine particles classifying device. SOLUTION: A conventional disk type superfine particles classifying device using kinetic movement (gravity) is improved to a superfine particles classifying device using electric mobility. Moreover, a classifying area is improved from one stage to multistage. Applied direct voltage, a kind and a flow rate of sheath gas and a flow rate of carrier gas are made settable in every classifying area so that the classification resolvality is enhanced as the number of stages in classifying area is in eased.
Abstract:
[Problem] To provide a diamond semiconductor device that can remarkably improve latitude of device design and be manufactured efficiently, and a method for manufacturing the same. [Solution] A diamond semiconductor device of the invention includes: a diamond substrate; a diamond step section disposed over substrate surface of the diamond substrate having a {001} crystal face to rise substantially perpendicularly to substrate surface; an n-type phosphorus-doped diamond region; and a diamond insulation region. In the diamond step section, a first step section having a {110} crystal face over a side surface is integrated with a second step section having a {100} crystal face over a side surface. The phosphorus-doped diamond region is formed by crystal growth started from base angle of the step shape of the first step section over the side surface of the first step section and substrate surface of the diamond substrate as growth base planes. The diamond insulation region is formed by crystal growth over the side surface of the second step section and substrate surface of the diamond substrate as growth base planes.
Abstract:
A white light-emitting device of the present invention includes a substrate (101); a diamond semiconductor layer (105) provided on the substrate (101), in which one or a plurality of p-type ± layers (102), a p-type or n-type ³ layer (103), and one or a plurality of n-type ² layers (104) are laminated in this order from the substrate (101); a first electrode (106) provided on the ± layer (102) which injects an electric current; a second electrode (107) provided on the ² layer (104) which injects an electric current; and a fluorescent member (108) which coats a light emission extraction region of the surface of the diamond semiconductor layer.