Effect of Calcination Temperature on Photoluminescence Intensity of Sol-Gel prepared Sr2CeO4: Eu3+ Nano Phosphor

Abstract

Pure Sr 2 CeO 4 phosphor and Sr 2 CeO 4 doped with europium (0.5, 1.0, 1.5, 2.0, 4.0 mol%) phosphor were synthesized by the sol-gel method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) spectra were used to characterize the pure Sr 2 CeO 4 and Sr 2 CeO 4 :Eu 3+ nano phosphor. It is a well-known fact that the crystallinity of the material increases with increase in the calcination temperature. Hence to study the effect of calcination temperature on the sol-gel synthesized phosphor (Sr 2 CeO 4 :Eu 3+ (2.0 mol%)), the phosphor was fired at various temperatures 1000, 1100 and 1200 ℃ for 2hrs respectively and it was found that the photoluminescence intensity of Sr 2 CeO 4 :Eu 3+ nano phosphor increases with the increase of calcination temperature. Sr 2 CeO 4 :Eu 3+ nano phosphor has an excellent colour tunability of red light with different concentration of europium and hence it can be a promising candidate for LED lighting Applications.