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Structure · dataset · 2024

Efficient energy transfer between Er and Dy achieved in perfluoride glass ceramics by tailoring crystallization characteristics

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Perfluoride glass ceramics (FGCs) with SrF2/CaF2 mixed crystals were prepared using a concurrent rapid-quenching-crystallization process.

Description

The FGCs contained dense, homogeneous, round crystals of sizes less than 1 μm with high transmittance (exceeding 80% at 3-8 μm) and low phonon energy (508 cm-1). The fluorescence properties of the FGCs doped with Er and Dy were investigated.

The energy transfer efficiency between Er and Dy reached 93.81% and 98.13%, corresponding to Er: 4I11/2 to Dy: 6H5/2 and Er: 4I13/2 to Dy: 6H11/2, respectively. This enhancement is attributed to the enrichment of rare-earth ions in the crystals induced by phase-separation and low phonon energy of the host material, FGC. Moreover, the average lifetime of Er: 4I11/2 in FGC reached 10.13 ms, which is the highest reported value for glass ceramics to our knowledge.

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This study enriches the research theory of FGC and provides guidance for expanding the properties of materials for mid-infrared photonics.

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Inorganic chemistry 71%
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