Effect of the synthesis method on the morphological, structural, and spectroscopic properties of rare earth monophosphates

The use of rare earth monophosphates as luminescent materials in optical devices is very popular in the last decades and their synthesis is an important research goal. This paper proposes a discussion of the morphological, structural, and spectroscopic properties of rare earth monophosphates phosphors as a function of the synthesis method. LnPO4: Eu3+, Dy3+ have been synthesized by hydrothermal and combustion methods. The obtained phosphors have been identified by X-ray diffraction, SEM, and FTIR spectroscopy. The X-ray diffraction patterns collected for the prepared materials indicated the high purity of the crystalline phase with a monoclinic structure. The morphological properties depend on rare earth elements and the synthesis method. Photoluminescence properties have been investigated based on excitation and emission spectra, decay curves, and chromatic coordinates