Abstract

A transparent glass ceramic (GC) is designed via the controllable precipitation of ${{\rm KYb}_3 {\rm F}_{10}}$ nanocrystals. It is shown that the crystallization in GC deeply depends on the doping of ${{\rm Yb}^{3 +}}$. ${{\rm Yb}^{3 +}}$ ions are spontaneously distributed in the fluoride crystal environments without the ionic substitution process of traditional GC. As a result, high-efficiency upconversion (UC) luminescence is achieved in GC. The UC quantum yield value of the ${{\rm Yb}^{3 +}}–{{\rm Er}^{3 +}}$-codoped GC is as high as ${1.44} \pm {0.02}\%$, which is more than 20 times higher than the traditional GC containing ${\rm NaYF}_4$ crystals. The designed GC offers opportunities for the promising development of active optical devices, and the crystallization strategy of this GC provides a powerful solution to conquer the bottleneck in luminescence efficiency of the traditional GCs.

© 2020 Optical Society of America

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