Tailoring the luminescent properties of Ca9La(PO4)5(SiO4)F2:1 mol%Eu3+ phosphor via doping of chloride, molybdate, vanadate, sulfate, and tungstate ions

• Published in: Journal of materials science. Materials in electronics 2020-02, Vol.31 (4), p.3426-3440
• Main Authors: Mehare, Chaitali M., Parauha, Yatish R., Chopra, Vibha, Ray, Sudeshna, Dhoble, N. S., Ghanty, Chandan, Dhoble, S. J.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemical synthesis; Chemistry and Materials Science; Chloride; Chlorides; Doping; Efficiency; Emission spectra; Europium; Excitation spectra; Fluorescent lighting; Glow curves; High temperature; Light emitting diodes; Materials Science; Morphology; Optical and Electronic Materials; Optical properties; Phosphors; Photoluminescence; Scanning electron microscopy; Thermoluminescence; Vanadates
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-020-02891-0

We report here, the Ca 9 La(PO 4 ) 5 (SiO 4 )F 2 :1 mol%Eu 3+ phosphor via doping of chloride, molybdate, vanadate, sulfate, and tungstate ions that were synthesized by high-temperature solid-state reaction method. The phase formation was confirmed by X-ray diffraction (XRD) measurements. Morphological studies were performed using scanning electron microscopy. Photoluminescence and thermoluminescence properties of the synthesized phosphors were systematically studied. The PL excitation spectra of host material show peaks at 395 nm and 466 nm corresponding to 7 F 0  →  5 L 6 and 7 F 0  →  5 D 2 transitions of Eu 3+ , respectively. Further photoluminescence properties also studied after doping of molybdate, vanadate, sulfate, and tungstate ions in host material. When excited at 395 nm and 466 nm, PL emission spectra show emission band at around 595 nm and 616 nm, which attributes to 5 D 0  →  7 F 1 and 5 D 0  →  7 F 2 transitions, respectively. Further TL glow curves of all the synthesized phosphors were studied when exposed to γ-rays.