Photoluminescent properties of nanoporous anodic alumina doped with manganese ions
| Autor: | S. P. Zhvavyi, E. E. Kolesnik, I. V. Gasenkova, N. I. Mukhurov, А.P. Stupak |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Photoluminescence Valence (chemistry) Materials science Nanoporous Annealing (metallurgy) Inorganic chemistry Metallurgy Doping Biophysics chemistry.chemical_element 02 engineering and technology General Chemistry Manganese 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics Ion chemistry Impurity 0103 physical sciences 0210 nano-technology |
| Zdroj: | Journal of Luminescence. 185:298-305 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2017.01.030 |
| Popis: | The results are presented of a comparative study of photoluminescent (PL) properties of unalloyed and Mn-alloyed porous anodic alumina (PAA) subjected to annealing at temperatures in the range of Тa=200–1300 °С. The possibility of alloying of PAA with metal atoms is illustrated through an example of Mn atoms, and the effect of this impurity on the optical properties of aluminum oxide is examined. Alloying of PAA with Mn ions leads to the formation of complex defects including manganese ions and oxygen vacancies. The difference observed in the spectral dependences of the PL intensity of alloyed and unalloyed specimens is explained by the change in the valence of manganese ions in the complex defects. A decrease has been discovered in the PL intensity of the PL bands and R-lines of Mn and Cr ions in the α-phase under prolonged UV-exposure of the alloyed samples. |
| Databáze: | OpenAIRE |
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