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Processing and Optical Properties of Eu-Doped Chloroborate Glass-Ceramic
| Content Provider | MDPI |
|---|---|
| Author | Secu, Mihail Secu, Corina Elisabeta |
| Copyright Year | 2020 |
| Description | An europium doped BaO–B2O3–BaCl2 chloroborate glass-ceramic containing a BaCl2 nanocrystalline phase was produced by melt-quenching followed by glass crystallization during annealing. Structural and morphological investigations using x-ray diffraction and scanning electron microscopy have shown fvBaCl2 nanocrystals of about tens of nm size accompanied by a smaller amount of the BaB2O4 crystalline phase. Photoluminescence spectra have indicated the reduction of Eu3+ to Eu2+ during processing in air or a reducing atmosphere. The spectra analysis showed the presence of Eu3+ ions in the borate glass matrix, while the Eu2+ were incorporated in both the BaCl2 nanocrystals and glass matrix. Thermoluminescence properties were due to the recombination of F(Cl) centers and Eu2+ related hole centers produced by irradiation within the BaCl2 nanocrystals. The color impression of the samples and the photoluminescence quantum efficiency were influenced by the glass processing. |
| Starting Page | 1101 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst10121101 |
| Journal | Crystals |
| Issue Number | 12 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-12-01 |
| Access Restriction | Open |
| Subject Keyword | Crystals Ceramics Glass Ceramic Nanocrystals Rare Earth Photoluminescence Thermoluminescence |
| Content Type | Text |
| Resource Type | Article |
