Luminescence characteristics of SrTiO3:Pr,Ga phosphor synthesized by sol–gel process

The thin film phosphors of SrTiO3:(0.004 mol Pr, 0.02 mol Ga) have been prepared by chemical solution deposition (CSD) method on the SiO2/Si, alumina, and quartz substrates. The phase formation and photoluminescence (PL) property of thin films with crystallization temperature have been characterized by FE-SEM, XRD, and spectrophotometer. The SrTiO3 (ST) phase was formed from 600 °C regardless of the type of substrate. The emission peak (611 nm) and excitation peak (370 nm) from the thin films were similar to those of the powder sample prepared by solid-state reaction. The SiO2/Si substrate produced the strongest emission and excitation spectra.