6533b82cfe1ef96bd128f445

RESEARCH PRODUCT

Upconversion luminescence in erbium doped transparent oxyfluoride glass ceramics containing hexagonal NaYF4 nanocrystals

Anatolijs SarakovskisGuna KriekeGuna Krieke

subject

Materials scienceOrders of magnitude (temperature)DopingMineralogychemistry.chemical_elementPhoton upconversionErbiumNanocrystalchemistryChemical engineeringvisual_artPhase (matter)Materials ChemistryCeramics and Compositesvisual_art.visual_art_mediumCeramicLuminescence

description

Abstract In this work transparent erbium doped oxyfluoride glass ceramics containing hexagonal NaYF 4 nanocrystals has been prepared by melt-quenching and subsequent heat treatment of the precursor glass. The formation of β-NaYF 4 was confirmed by X-ray diffraction measurements. The overall intensity of the upconversion luminescence of the glass ceramics sample is 2 orders of magnitude higher than that of the precursor glass. The observed enhancement of the efficiency is explained by the incorporation of Er 3+ into low-phonon β-NaYF 4 crystalline phase.

https://doi.org/10.1016/j.jeurceramsoc.2015.06.014