Photoluminescence investigation of novel KCaPO4:Sm3+ phosphors for n-UV based solid state lighting Prepared by wet chemical synthesis

• Published in: Optical and quantum electronics 2023-12, Vol.55 (13), Article 1173
• Main Authors: Nandanwar, C. M., Kokode, N. S., Nande, A. V., Mungmode, C. D., Yerpude, A. N., Yerojwar, R. M., Dhoble, S. J.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemical synthesis; Chromaticity; Computer Communication Networks; Electrical Engineering; Emission analysis; Lasers; Lighting; Optical Devices; Optics; Phosphors; Photoluminescence; Photonics; Physics; Physics and Astronomy; Quadrupole interaction; Quadrupoles; Quenching; Solid state
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-023-05318-2

The wet chemical method was used for the first time to synthesize novel KCaPO 4 :Sm 3+ phosphor. The characteristics of XRD, morphology and photoluminescence were thoroughly investigated. The hexagonal structure of KCaPO 4 is confirmed by the XRD analysis. The KCaPO 4 :Sm 3+ phosphor emission are peaks located at 565 nm, 599 nm and 646 nm under excited at 403 nm. Concentration quenching was shown to occur at 1 mol% of Sm 3+ ions. It was found that concentration quenching occurred as a result of quadrupole–quadrupole interaction according to Dexter’s theory. The CIE Chromaticity coordinate of the prepared phosphor was located in the orange region around (0.602, 0.395) with high color purity. The current study suggests that KCaPO 4 :Sm 3+ phosphors could potentially represent a promising n-UV converter material for solid-state lighting applications.