Structure, luminescence and energy transfer of Eu2,3+/Tb3+ co-doped transparent glass ceramics containing α-Ca3(PO4)2 nanocrystals
| Autor: | Yu Zhang, Wenfeng Zhu, Wenting Ding, Bo Wang, Rui Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering Energy transfer Doping Metals and Alloys Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion law.invention Nanocrystal Mechanics of Materials law visual_art Materials Chemistry visual_art.visual_art_medium Ceramic Crystallization 0210 nano-technology Luminescence Spectroscopy |
| Zdroj: | Journal of Alloys and Compounds. 815:152661 |
| ISSN: | 0925-8388 |
| Popis: | Eu2,3+/Tb3+ co-doped transparent glass ceramics containing α-Ca3(PO4)2 nanocrystals were prepared through a phase-separation-controlled crystallization route. The XRD and TEM results revealed that α-Ca3(PO4)2 nanocrystals dispersed uniformly in the CaO–P2O5–SiO2–Al2O3–ZrO2 glass matrix, and grew gradually with increasing heat-treated temperature. Optical spectroscopy analysis confirmed the self-reduction of Eu3+ to Eu2+ in the Eu-doped samples, and the luminescence was tuned with increasing heat-treated temperature and doping concentration. Noticeably, Eu2+, Tb3+ and Eu3+ ions respectively behaved as the blue, green and red luminescent centers, and thus various emitting colors were easily obtained through adjusting the doping concentrations of rare earth ions. Besides, the energy transfer mechanism between Eu2+, Tb3+ and Eu3+ was discussed. |
| Databáze: | OpenAIRE |
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