Core-shell quantum dot fluorescent fine particles

摘要

Disclosed is an ultraviolet fluorescent material having high light emission efficiency, wherein the peak wavelength of ultraviolet light to be emitted can be controlled by having a quantum dot structure wherein a fine crystal of zinc oxide having an average diameter of 1-10 nm serves as a core, and the surface of the zinc oxide fine crystal is covered with at least one of LiGaO₂, LiAlO₂, NaGaO₂ and NaAlO₂, which has a crystal structure similar to that of the zinc oxide and low lattice mismatch and hardly suffers from structural defects, or a solid solution thereof.