Fine particle Sr2SiO4:Tb phosphor for the plasma display panel prepared by a combined approach

Sol–gel with microwave heating was employed to prepare fine particles Sr2SiO4:Tb phosphor. X-ray diffractometer was used to characterize the structural of the samples. The Scanning Electron Microscope image shows that the particle size is about 300 nm. The phosphor particles have several advantages in the morphology, such as excellent surface quality, spherical shape, and narrow size distribution with no aggregation. The VUV luminescence measurements indicate that the phosphor presents an intense excitation band at 173 nm. Because the wavelength of excitation source in PDP is mainly at 147 and 172 nm, it makes Sr2SiO4:Tb a potential candidate for green emitting phosphor for plasma display panel (PDP) application. Photoluminescence (PL) measurements indicate that the Sr2SiO4:Tb particles present excellent green emission at 542 and 547 nm excitated at 236 and 172 nm, respectively.