Photoluminescence and quenching study of the Sm3+-doped LiBaPO4 phosphor

• Published in: Journal of materials science. Materials in electronics Vol. 33; no. 1; pp. 328 - 341
• Main Authors: Kumar, Ishant, Gathania, Arvind K.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.01.2022; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Dipole interactions; Fourier transforms; Infrared spectroscopy; Materials Science; Optical and Electronic Materials; Phosphors; Photoelectrons; Photoluminescence; Quenching; Scanning electron microscopy; Spectrum analysis; X ray photoelectron spectroscopy; X-ray diffraction
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-021-07301-7

Sm 3+ -doped LiBaPO 4 phosphors have been successfully synthesized by solution combustion method. As prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared, and photoluminescence spectroscopy. Phase formation was confirmed by comparing the XRD pattern of the samples with available JCPDS (No. 14-0270) data. SEM images of the phosphor revealed its porous morphology. XPS study revealed the successful doping of the activator at the host site. Photoluminescence spectra of LiBaPO 4 :Sm 3+ exhibit four characteristic emission peaks due to 4 G 5/2 to 6 H J (J = 5/2, 7/2, 9/2, and 11/2) at excitation wavelength of 402 nm. The Dexter’s theory revealed that the concentration quenching behavior has occurred due to the dipole–dipole interaction between the Sm 3+ -Sm 3+ ions in the phosphors. The calculated Commission Internationale de I’Elcairage color co-ordinates reveal its deep orange-reddish emission which indicates its utility in lighting and photonic applications .