A blue emitting powder phosphor, Sr2CeO4 was prepared using a solid-state reaction technique. Powders grown at 11000C for 3 hours yielded good luminescence. The emission peak of this phosphor is 470 nm. In order to effectively use this phosphor in a tricolour lamp, studies have been carried out to see the effect of rare earth dopants on the luminescence spectra of this phosphor. The effect of dopants on the performance of the phosphor has been evaluated and the effect of using these dopants and the physical characterization of these phosphors using optical and structural techniques are discussed in this paper. Introduction: Plasma display panels (PDP) are replacing traditional color televisions. A top priority in the phosphor sector today is to replace expensive high performance rare earth active phosphors with cheaper equivalent materials. This means replacing the rare earth ions with transition metal ions or post-transition ions. Advances in optical spectroscopy of solids, especially transition metal ions in phosphors, and research on solid-state luminescence helped to develop. In the 1960s, efficient rare earth active phosphors were developed for use in color television (Tb3+ -green, Eu3+-red and Dy3+ - yellow) and in the 1970s a tricolor lamp was introduced. Blue emission from Eu2+, red emission from Eu3+ and green emission from Ce3+ - Tb3+ pair were used in tricolor lamp. Currently, a combination of halo phosphate and tri-band phosphor mixtures is commonly used in many lamps as a compromise between performance, phosphor cost, and lamp manufacturing cost. However, better materials are needed to improve the performance of already existing low-cost phosphors. One such material is strontium cerate, a phosphor based on this material was synthesized and characterized using photoluminescence. XRD and Scanning Electron Microscope (SEM) techniques