Microstructural and Radioluminescence Characteristics of Nd3+ Doped Columbite-Type SrNb2O6 Phosphor
| Autor: | Mustafa İlhan, Mehmet Ayvacıklı, Mete Kaan Ekmekçi, A. Ege |
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| Přispěvatelé: | Department of Chemistry, Marmara University, Kadıkoy, Istanbul, 34777, Turkey, Department of Materials Science and Engineering, Marmara University, Kadıkoy, Istanbul, 34777, Turkey, Department of Physics, Celal Bayar University, Manisa, 45140, Turkey |
| Rok vydání: | 2017 |
| Předmět: |
Sociology and Political Science
Clinical Biochemistry Niobium Analytical chemistry Mineralogy chemistry.chemical_element Phosphor 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Biochemistry chemistry.chemical_compound Strontium nitrate Molten salt Spectroscopy Doping Radioluminescence 021001 nanoscience & nanotechnology 0104 chemical sciences Clinical Psychology chemistry engineering Orthorhombic crystal system 0210 nano-technology Law Columbite Social Sciences (miscellaneous) |
| Zdroj: | Journal of Fluorescence. 27:973-979 |
| ISSN: | 1573-4994 1053-0509 |
| DOI: | 10.1007/s10895-017-2032-3 |
| Popis: | Undoped and different concentration Nd3+ doped SrNb2O6 powders with columbite structure were synthesized by molten salt process using a mixture of strontium nitrate and niobium (V) oxide and NaCl-KCl salt mixture as a flux under relatively low calcining temperature. X-ray diffraction analysis results indicated that SrNb2O6 phases found to be orthorhombic columbite single phase for undoped, 0.5 and 3 mol% Nd3+ doping concentrations. Phase composition of the powders was examined by SEM-EDS analyses. Radioluminescence properties of Nd3+ doped samples from UV to near-IR spectral region were studied. The emissions increased with the doping concentration of up to 3 mol%, and then decreased due to concentration quenching effect. There is a sharp emission peak around 880 nm associated with 4F5/2 → 4I9/2 transition in the Nd3+ ion between 300 and 1100 nm. The broad emission band intensity was observed from 400 to 650 nm where the peak intensities increased by increasing Nd3+ doping concentration. All the measurements were taken under the room temperature. © 2017, Springer Science+Business Media New York. |
| Databáze: | OpenAIRE |
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