The structural and luminescence properties of the apatite-type compound Ca2La3(SiO4)3F:Eu3+ synthesized by solid-state reaction are reported herein. Ca2La3(SiO4)3F possesses hexagonal symmetry with space group \( P6_{3} /{\text{m}}\) . The surface morphology of the prepared phosphor was confirmed by scanning electron microscopy (SEM), and the chemical composition was confirmed by energy-dispersive x-ray spectroscopy (EDS). The prepared Ca2La3(SiO4)3F:Eu3+ was excited at 392 nm, and an intense peak obtained at 615 nm was attributed to 5D0 → 7F2 transition along with other weak emission peaks. Judd–Ofelt intensity parameters for f–f transitions of Eu3+ were derived from the emission spectra. Orange-red emission was confirmed by the CIE chromatic coordinate diagram. This phosphor is suitable for applications in solid-state lighting, display devices, and other optical applications.
