Analysis reveals enhanced optical properties and grain growth of Ho:Y2O3 ceramics with YF3 addition.
Transparent ceramics of Holmium-doped yttria (Ho:Y 2 O 3 ) were fabricated by Hot Isostatic Pressing at 1720 °C / 190 MPa in argon, and the effect of YF 3 addition on their microstructure, optical, vibronic and infrared emission properties was studied. The fluorine addition improves the ceramic transparency, accelerates the grain growth and enhances the luminescence lifetimes of Ho 3+ states responsible for emissions at 2 µm and 3 µm.
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Delaunay et al. (2025) studied this question.
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