Molecular Crystals and Liquid Crystals, Vol.499, 407-413, 2009
Photoluminescence Characteristics of Nanocrystalline ZnGa2O4 Phosphors Obtained at Different Sintering Temperatures
A nano-sized ZnGa2O4 phosphor was synthesized via a precipitation method (at a low temperature) and then sintered at various temperatures. X-ray diffraction (XRD) analysis confirmed that single-crystalline ZnGa2O4 particles were formed. A pure ZnGa2O4 phase was obtained at a sintering temperature of 1000C. Theaverage size of the spherical ZnGa2O4-phosphor particles increased with increasing sintering temperature. The most intense photoluminescence (PL) peak - corresponding to blue emission at about 420nm - was observed for the sample prepared at a sintering temperature of 1000C.