Ce3+/Ho3+ doped LaPO4 nanomaterials produced by hydrothermal technique for luminescence studies using ethylene glycol (EG)

Abstract

Using the Hydrothermal technique, a series of trivalent Ce³⁺/Ho³⁺co-doped LaPO₄ nanophosphors were synthesised and exhibited good luminous qualities in both the (UC) and (DC) regimes. At 279–300 nm excitation, DC peaks at 365 nm, 460, 542, and 650 nm were seen, along with a minor non-radiative resonance energy transfer and a highly hazy P-O Charge Transfer (CT) band of Ho³⁺ions. We find that the (UC) nanophosphor LaPO₄: Ce³⁺/Ho³⁺allows a strong 980 nm laser stimulation, causing the UC emission spectra to exhibit prominent Ho³⁺ ion resulting in peaks at 460, 542 and 650 nm as well as weak emission peaks at 300–360 nm. Future applications for these co-doped Ce³⁺ and Ho³⁺ ion monoclinic LaPO₄ nanocrystals are anticipated to include better optical materials. Ultimately, many potential uses in various industries, from sophisticated display technologies to biomedical imaging and beyond, are made possible by the production and characterisation of co-doped Ce³⁺/Ho³⁺ ion nanophosphors in LaPO₄ matrices. The realisation of useful systems and technologies utilising the special qualities of these nanocrystals may result from more study and development in these fields.