Zn3(VO4)2 -a rare-earth-free yellow phosphor-

Abstract

A new rare-earth-free phosphor Zn₃(VO₄)₂ was developed in this work. The starting materials of V₂O₅ and ZnO were solved in hydrochloric acid or nitric acid and the obtained dried-precursors were heated at 500-1000 deg.C in a vertical-type tubular furnace under the atmospheric conditions. Nitric acid was more suitable for the preparation because the precursor prepared with hydrochloric acid provided a by-product phase of Zn2V2O7 together with Zn₃(VO₄)₂ with due to the vaporization of ZnCl₂ in the precursor, which does not show phosphorescence.