Transparent oxyfluoride glass-ceramics (GCs) with embedded β-Na.Y.F crystals doped with Er ions were fabricated by a melt-quenching method with subsequent heat-treatment. The structural characterizations and spectroscopic techniques were performed to verify the precipitation of β-Na.Y.F crystals and partition of the Er dopant into the crystals. Bright green up-conversion (UC) emission was achieved in Er-doped glass-ceramic (Er-GC). Furthermore, the temperature-dependent visible UC behavior based on thermally coupled energy levels (TCLs) and non-thermally coupled energy levels (NTCLs) was also examined in the temperature range 298 k to 823 K with maximum relative sensitivity () of 1.1% K at 298 K for TCLs in Er-G and Er-GC samples.
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| http://dx.doi.org/10.3390/molecules26226901 | DOI Listing |
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