Influence of Ca2+ Impurity on Structure, Morphological and Optical Characteristics of Eux VO4 and La1-xEuxVO4 Nanoparticles

Un-doped and Ca-doped Eu x VO 4 and La l-x Eu x VO 4 vanadate nanoparticles were synthesized by sol-gel method. Phase compositions, morphology and luminescent characteristics of the samples were investigated. The Ca-doping influences on structure of luminescence spectra and chromaticity characteristics of all the samples even at low concentrations. The structure of Ca-related light absorption and emission centers is discussed using results about crystal structure and morphology of the samples.