Abstract
With a specially designed composition, highly transparent -doped fluorosilicate glass ceramic (GC) containing perovskite nanocrystals (NCs) is obtained for the first time. The rare-earth ions are preferentially accumulated in regions embedded with NCs; as a result, a remarkably enhanced (by an order of magnitude) single-band red upconversion luminescence (UCL) is achieved. Absolute quantum efficiency of the red UCL, which cannot be measured in previous GCs owing to insufficiency, reaches as high as in the GC sample reported in this Letter. This value is even higher than that of the well-known multiband emitting NCs and widely recognized GCs containing .
© 2019 Optical Society of America
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