Synthesis and luminescent properties of Mn-doped alpha-tricalcium phosphate

Abstract

In this work, a series of Mn2+-doped α-tricalcium phosphate (α-TCP) powders was synthesized by wet co-precipitation method followed by high-temperature annealing and thermal quenching. It was shown that Mn2+-doped α-TCP polymorph can be successfully synthesized with a doping level up to 1 mol%. All Mn-doped samples exhibited a broadband emission in the range from 525 to 825 nm with a maximum centered at around 630 nm. The highest emission intensity was observed for the sample with the highest content of Mn. The crystal structure and purity were evaluated by powder X-ray diffraction (XRD), Fourier-transform infrared (FTIR) and electron paramagnetic resonance (EPR) spectroscopies. Scanning electron microscopy (SEM) was used to investigate the morphological features of the synthesized products. Optical properties were investigated by means of photoluminescence measurements. Excitation spectra, emission spectra and decay curves of the samples were studied. Temperature-dependent photoluminescence measurements were performed as well.---- / / /---- This is the preprint version of the following article: Lauryna Sinusaite, Andris Antuzevics, Anatoli I. Popov, Uldis Rogulis, Martynas Misevicius, Arturas Katelnikovas, Aivaras Kareiva, Aleksej Zarkov, Synthesis and luminescent properties of Mn-doped alpha-tricalcium phosphate, Ceramics International 47 (4) (2021), https://doi.org/10.1016/j.ceramint.2020.10.114, which has been published in final form at https://www.sciencedirect.com/science/article/pii/S0272884220331540. This article may be used for non-commercial purposes in accordance with Elsevier Terms and Conditions for Sharing and Self-Archiving. This work is licensed under a CC BY-NC-ND 4.0 license.