Synthesis and photoluminescence properties of Eu³⁺‐activated Ba₂Mg(PO₄)₂ phosphor

Abstract

Abstract In this paper, we have reported the photoluminescence (PL) properties of the Ba 2 Mg(PO 4 ) 2 :Eu 3+ phosphor synthesized using a wet chemical method. The preliminary scanning electron microscopy (SEM) investigation of the sample revealed irregular surface morphology with particle sizes in the 10–50 μm range. The strongest PL excitation peak was observed at 396 nm. The emission spectra indicated that this phosphor can be effectively excited by the 396 nm wavelength. Upon 396 nm excitation, the emission spectrum showed characteristics peaks located at 592 nm and 615 nm. These intense orange‐red emission peaks were obtained due to f→f transitions of Eu 3+ ions. The emission peak at 592 nm is referred to as the magnetic dipole 5 D 0 → 7 F 1 transition and the emission peak at 615 nm corresponded to the electric dipole 5 D 0 → 7 F 2 transition of Eu 3+ . The Commission Internationale de l’Eclairage (CIE) coordinates of the Ba 2 Mg(PO 4 ) 2 :Eu 3+ phosphor were found to be (0.586, 0.412) for wavelength 592 nm and (0.680, 0.319) for wavelength 615 nm situated at the edge of the CIE diagram, indicating high colour purity of phosphors. Due to the high emission intensity and a good excitation profile, Eu 3+ ‐doped Ba 2 Mg(PO 4 ) 2 phosphor may be a promising orange‐red phosphor candidate for solid‐state lighting applications.