Thermal quenching of luminescence in nanostructured monoclinic zirconium dioxide
| Autor: | Alexander Vokhmintsev, Ilya Weinstein, V. S. Kortov, D.L. Savushkin, S. V. Nikiforov |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Radiation Materials science Zirconium dioxide Drop (liquid) Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Photochemistry Kinetic energy 01 natural sciences Thermoluminescence Emission band chemistry.chemical_compound chemistry 0103 physical sciences 0210 nano-technology Luminescence Instrumentation Thermal quenching Monoclinic crystal system |
| Zdroj: | Radiation Measurements. 106:155-160 |
| ISSN: | 1350-4487 |
| DOI: | 10.1016/j.radmeas.2017.03.020 |
| Popis: | A thermal quenching effect of luminescence was studied in nanostructured compacts of monoclinic zirconium dioxide obtained by cold pressing of nanopowders. The dependence of PL intensity at 480 nm emission band on temperature was found experimentally. It was established that TL quenching causes the drop of lightsum in 390 and 485 К peaks with a growing heating rate. TL kinetic parameters values of these peaks were calculated by different methods. A simulation of lightsum dependences of the above mentioned TL peaks on the heating rate was carried out. The mechanism of luminescence thermal quenching, taking into account not only intracentral but also external electronic processes of charge transfer, is justified for monoclinic ZrO2. |
| Databáze: | OpenAIRE |
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