Preparation and luminescent properties of rubidium and cesium vanadates

Abstract

Four rubidium and cesium vanadates, with the compositions Rb5V3O10, Rb3V5O14, Cs5V3O10, and Cs2V4O11, have been synthesized and identified, and their thermal stability ranges have been determined. Their spectroscopic properties and luminescence kinetics have been studied: we have measured their X-ray luminescence spectra at room temperature and liquid-nitrogen temperature, photoluminescence spectra, and photoluminescence excitation spectra. The spectra are compared to those of RbVO3 and CsVO3—phosphors that have optimal properties among the alkali metal vanadates.