<p>Beta-Calcium orthosilicate (β-Ca₂SiO₄) doped with different concentrations of Ce³⁺ and Dy³⁺ in the presence of Li⁺ ions was synthesized using the solid-state reaction method. The structural phase purity was studied by X-ray powder diffraction (XRD), resulting in all peaks matching well with JCPDS data file 86-0398. The average crystallite size of the phosphors was calculated using the Williamson-Hall (W-H) method. The formation and purity of the products were further confirmed by Fourier Transform Infrared (FTIR) spectroscopy. The surface morphology and elemental composition of the phosphors were studied using field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDS), respectively. Under 294 nm excitation, Ca₂SiO₄:Ce³⁺ Phosphor shows two emission bands at 310 and 390 nm. Photoluminescence (PL) studies revealed emission spectra at 481 nm (blue) and 577 nm (yellow) when excited by 350 nm. The blue emission at 481 nm is attributed to the magnetic dipole transition of ⁴F_9/2 → ⁶H_15/2, while the yellow emission at 577 nm is related to the electric dipole transition of ⁴F_9/2 → ⁶H_13/2. The energy transfer mechanism between Ce³⁺ and Dy³⁺ ions was studied, and the critical distance (Rc) was calculated to be 14.66 Å. The optimum PL intensity was observed for 2 mol % of Dy³⁺. Li⁺ ions were used as charge compensators, enhancing the luminescence intensity. Different concentrations of Li⁺ ions (1.0 – 3.0 mol %) also showed maximum intensity at 2 mol %. The CIE (Commission Internationale de l’Eclairage) 1931 color coordinates of Ca₂SiO₄ indicate suitability as a white lightemitting phosphor for white light-emitting diodes (WLEDs).</p>