Анализ формы спектров фотолюминесценции в нанопорошках h-BN при возбуждении в УФ-диапазоне

Abstract

Photoluminescence (PL) processes in mesographic nanopowders of hexagonal boron nitride have been studied. A three-dimensional PL dependence have been obtained in coordi-nates «luminescence intensity – excitation wavelength – emission wavelength». The shape of spectral crosssections of the 3D dependence have been analyzed in the energy representation under assumption of independent Gaussian components superposition. It has been shown that the PL processes occur with participation of impurity centers on the basis of carbon and oxygen ions, as well as defects in the nitrogen sublattice of h-BN.