Modified low temperature solid state synthesis and photoluminescent properties of Y0.48Li1.5V1 − x P x O4:Eu3+ (x = 0.2, 0.4, 0.6) nanophosphors

Abstract

A modified low temperature solid state process has been proposed to systematically synthesize europium-doped yttrium phosphate-vanadates with general formula Y0.48Li1.5V1 − xPxO4:Eu3+ (x = 0.2, 0.4, 0.6). All the Y0.48Li1.5V1 − xPxO4:Eu3+ products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The excitation and emission spectra were measured at room temperature. Y0.48Li1.5V1 − xPxO4:Eu3+ show the characteristic missions of Eu3+ (5D0−7F1, 2, 3, 4 transitions dominated by 5D0−7F2), intensities of the products were sensitive to the x value, and the x value had an obvious influence on the (5D0−7F2)/(5D)0−7F1) intensity ratio of Eu3+. In addition, incorporation of Li+ ions in the phosphors reduce the amount of Y2O3, lower the cost of production, and cause a new phase Li3VO4.