Abstract
This work reports a synthesized natural Moroccan hydroxyapatite (NHAP) phosphors doped by rare-earth elements using ion exchange technique. The objective of this technique lies in the generation of luminescence after UV excitation of the synthetized phosphors. Effects of doping and co-doping on the NHAP physicochemical properties were investigated using multiple characterization methods such as X-ray diffraction (XRD), scanning electron microscopy, Fourier transform infrared spectroscopy, inductively coupled plasma and photoluminescence spectroscopy. The XRD results show that Tb3+/La3+ incorporated into NHAP does not change its structure. Under near-ultraviolet excitation at 405 nm, NHAP: xTb3+, yLa3+ samples show the advantage to obtain a single emission peak, which corresponds to the green colour characteristic of terbium. Moreover, the chromaticity coordinates of NHAP: 0.5%Tb, 1.5%La indicate the excellent cool green-emitting phosphors with a low correlated colour temperature. Overall, the obtained results suggest that NHAP (0.5%Tb: 1.5%La) could be used as multifunctional bio-imaging materials or solid-state lighting for LEDs with high lighting efficiency.
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Acknowledgements
We are thankful to the Technical Support Units for Scientific Research (UATRS) of National Scientific Research and Technology Centre (CNRST) of Morocco - Rabat. We also thank the editor and the anonymous reviewers for their critical insightful comments and many constructive suggestions.
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Tahiri Alaoui, Y., Semlali Aouragh Hassani, N. Luminescence properties of valorized and synthetic Tb3+/La3+ co-doped natural Moroccan hydroxyapatite. Bull Mater Sci 46, 70 (2023). https://doi.org/10.1007/s12034-023-02905-7
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DOI: https://doi.org/10.1007/s12034-023-02905-7