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Journal Articles Journal of the Indian Chemical Society Year : 2022

An anhydrous precursor approach to BaYF5-based upconverting nanocrystals

Abstract

With an objective to have easy access to high quality BaYF5 matrix, we report here new anhydrous precursors of barium and yttrium which show a good compatibility in terms of co-thermal decomposition. These complexes not only fill the void of precursors for Ba-based upconverting (UC) nanomaterials but also provide a way to minimize the –OH concentration around these nanocrystals (NCs) to enhance their UC efficiency without requiring the usual core-shell structure. The precursors and the BaYF5 NCs co-doped with Yb3+/Tm3+ ions were thoroughly characterized. The NCs were studied for upconversion properties and preliminary results are presented here. On the basis of these results, a mechanism for the energy transfer in Yb–Tm system is proposed.
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hal-03681649 , version 1 (08-01-2024)

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Bhagyesh Purohit, Erwann Jeanneau, Thibault Cornier, Gilles Ledoux, Shashank Mishra. An anhydrous precursor approach to BaYF5-based upconverting nanocrystals. Journal of the Indian Chemical Society, 2022, 99 (2), pp.100322. ⟨10.1016/j.jics.2021.100322⟩. ⟨hal-03681649⟩
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