Direct observation of Nd3 + and Tm3 + ion distributions in oxy-fluoride glass ceramics containing PbF2 nanocrystals

Add time:08/21/2019    Source:sciencedirect.com

Nd3 + and Tm3 +, doped oxy-fluoride glasses and glass ceramics were prepared by conventional melt-quenching and subsequent heat-treatment, respectively. β-PbF2 nanocrystals with diameter 50 –100 nm formed in the glass matrix after heat treatment. The Stark splitting in absorption peaks, enhanced photoluminescence and prolonged lifetimes that β-PbF2 nanocrystal formation increased the luminescence of rare earth ions. Both Nd3 + and Tm3 + ions were incorporated into nanocrystals that were enriched in lead and fluorine, and deficient in oxygen.

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