ZINC SULFIDE NANOSTRUCTURE COATED WITH BORON NITRIDE FILM AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a zinc sulfide nanostructure having high chemical stability and to provide a method for producing the same. SOLUTION: A zinc sulfide nanostructure coated with boron nitride is formed by heating zinc sulfide twin crystal nanowhiskers in the presence of a vapor of a compound comprising boron, nitrogen, and oxygen in an atmosphere of a mixed gas of a nitrogen gas and an ammonia gas. According to this method, the zinc sulfide twin crystal nanowhiskers recrystallize into zinc sulfide twin crystal nanowhiskers having spiniform branches, and a boron nitride film grows on their surfaces. The boron nitride film is a crystalline boron nitride film grown in a crystal orientation in which a specified crystal face of the crystalline boron nitride is parallel with the surfaces of the zinc sulfide twin crystal nanowhiskers having the spiniform branches. The spiniform parts are nanosized structures and are therefore capable of emitting ultraviolet rays. COPYRIGHT: (C)2005,JPO&NCIPI