Study of luminescentproperties of terbium activated li2srsio4 phosphor

Luminescence properties of Li2SrSiO4 doped rare-earth elementsynthesized by high temperature solid state diffusion method reported in this paper. Suitable quality in molar Percentage of Lithium carbonate (Li2CO3), Strontium Carbonate (SrCO3), & silica (SiO2) and Terbium oxide (Tb2O4) are taken and ground in acetone medium. The sampleis taken in the alumina crucible and heated 1200 0C for four hours. The furnace was allowed to chill temperature. The crucible are taken out and located the fabric is molted and stick with the bottom of the crucible. The prepared materials Li2SrSiO4:1.0 % Tb3+phosphor was characterized by X-ray diffraction (XRD) and photoluminescence (PL). The crystallite size of powders samples were calculated from X-ray peak broadening of the diffraction using Scherer’s formula. The calculated average crystallite size of the Li2SrSiO4:1.0 % Tb3+phosphor is 75 nm. The XRD patterns of the powders revealed that the structure of Li2SrSiO4:Tb3+is orthorhombic. The photoluminescence excitation spectra identify that the Li2SrSiO4:Tb3+ phosphors are often successfully excited by 248 nm wavelength. The emission properties of Li2SrSiO4:Tb3+ phosphors are strongly dependence upon the concentration of rare-earth element Tb3+. The CIEcoordinates of the Li2SrSiO4:1.0 % Tb3+ are x=0.60, y=0.31. From this the present phosphor is potential candidate for light emitting devices.