Sr2SiO4 silicate doped with rare earth ion (RE = Eu3+) was synthesized by high temperature solid state reaction method. The sample was X-Ray diffraction (XRD) characterized and the analysis of XRD data conveyed that the sample to be crystalline, single phase and crystallized to orthorhombic structure (Pmnb). The structure, space group (Pmnb) and other structure concerned parameters were further verified using Rietveld refinement. The FTIR spectra confirm the formation of Sr2SiO4: Eu3+ phosphor. UVâvis studies have been carried out to investigate optical band gap of prepared phosphor. Luminescence property of Sr2SiO4; Eu3+ phosphor was studied via photoluminescence and thermoluminescence. The emission spectrum displayed characteristic emission peaks corresponding to Eu3+ at 587, 612 and 702 nm. The Commission International de IâEclairage (CIE) color coordinates of Sr2SiO4; Eu3+ phosphor were calculated and found as x = 0.601 and y = 0.397 lying in Strong red region. Thermoluminescence (TL) response of Eu3+ doped Sr2SiO4 phosphor were studied for different dose of UV irradiation and for varying heating rate, the trap parameters viz., order of kinetics, symmetry factor, kinetic energy associated with the intense glow peak of Sr2SiO4: Eu3+ phosphor were determine using glow curve peak shape method.