Structural and luminescence performance of the Eu3+doped alkaline combined metal oxide-based sodium phosphate phosphors; NaMPO4 (M = Mg, Ba, and Ca) for LED applications

被引:4
作者
Wani, Mashooq Ahmad [1 ]
Magray, Tajala Fayaz [2 ]
Belekar, R. M. [3 ]
机构
[1] Govt Vidarbha Inst Sci & Humanities, Dept Phys & Elect, Amravati 444604, Maharashtra, India
[2] Univ Mumbai, Dept Phys, Lokmanya Tilak Bhavan, Lokmanya Tilak Bhavan, Mumbai 400098, Maharashtra, India
[3] Inst Sci, Dept Phys, Civil Lines, Nagpur 440001, Maharashtra, India
关键词
Phosphate phosphors; Electron density mapping; Photoluminescence study; Structural study; RED PHOSPHOR; CHARGE COMPENSATION; PHOTOLUMINESCENCE; CAMOO4; EU3+; NA+;
D O I
10.1016/j.inoche.2023.111703
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The present research module is about the synthesis of Eu3+ ions-doped NaMPO4 (M = Mg, Ba, and Ca) phosphate phosphors by the solution combustion synthesis method. The phase formation and chemical structures of alkaline combined metal oxide-based sodium phosphate phosphors are characterised by X-ray powder diffraction (XRD) and FT-IR measurements. Optimized crystal geometries were generated by employing VESTA software. The crystallite size was calculated from the full width at half maximum (FWHM) of the diffraction peak using the Scherrer formula. G-Fourier transformation software (G-FT) was adopted for generating electron density map-ping of NaMgPO4 phosphors, 2D mapping, and 3D chicken plots showing crystal sites occupied by the compound's constituent elements. The particle size distribution was confirmed by XRD diffraction, and SEM analysis found approximately 12 mu m. UV-visible and photoluminescence spectroscopy uncover the optical traits of the prepared phosphor. Photo-emissions of Eu3+doped alkaline combined metal oxide-based sodium phosphate phosphors were monitored at possible excitation wavelengths. The orange-red peak observed at 592 nm and 598 nm occurs due to 5D0 -7F1 electric dipole transitions. The peak observed at 618 nm corresponds to the forbidden f -f transitions 5D0 -7F2. It is worth mentioning that absorption bands originating from the corresponding 5D0 -7F2 transition widen the band region; hence, the stark effect becomes complicated. A low-intensity peak of 688 nm was observed in the NaCaPO4 phosphors, attributed to the 5D0 -7F3 transition. Chromaticity coordinates and energy level transitions may determine the colour emission materials. The CIE coordinates of NaMPO4: Eu3+phosphors exhibit reddish emission and find application in light-emitting diodes (LEDs) and illuminating displays.
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页数:11
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