sp3 BOND BORON NITRIDE EMITTING LIGHT IN ULTRAVIOLET REGION, ITS PRODUCING METHOD, AND FUNCTIONAL MATERIAL USING SAME

摘要

An sp3 bond boron nitride expressed by general formula BN, and having a hexagonal 5H or 6H polygonal structure and a property that it emits ultraviolet radiation, and a method for producing such boron nitride. A method for producing such boron nitride can be a method in which a reaction mixed gas containing boron and nitrogen is diluted with a diluent gas and the diluted gas is introduced into a reaction vessel, ultraviolet radiation is applied to the surface of a substrate placed in the reaction vessel, the growing surface on the substrate, or the growth space near the growth surface, and thus boron nitride is produced, deposited, or grown on the substrate by vapor phase reaction. Such boron nitride is used as an electronic material of e.g., a light-emitting diode, for an ultraviolet solid laser, as an electron emitting material, and as a material for coating the surface of a cutting tool. The boron nitride emits light with a sharp peak near 225 nm, and can be a promising material for putting a solid ultraviolet laser into practical use.