Influence of calcining temperature on photoluminescence and thermal quenching in europium-doped Y2SiO5 using the MOD process

The crystalline Eu0.25Y1.75SiO5 (EYSO) fine powders were prepared using metallorganic decomposition process, in which the pure X1- and X2-Y2SiO5 phases were obtained by calcining at temperatures from 850°C to 1600°C. The influence of calcining temperature on photoluminescence (PL) and thermal quenching were systematically investigated from room temperature to 573 K for the first time. As a consequence, the X2-EYSO was higher in light emission intensities than the X1-EYSO, but the X1-EYSO possessed better temperature dependence of PL. The phase structure had a significant effect on the light emission intensity and energy as well as its temperature characteristics in the EYSO.