Photoluminescence of f-centers in films of anodic alumina |
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Authors: | N I Mukhurov S P Zhvavyi I V Gasenkova S N Terekhov P P Pershukevich and V A Orlovich |
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Institution: | (1) School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; |
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Abstract: | Results are reported from a study of the optical properties of porous alumina films obtained by anodizing in a water solution
of sulfuric acid and modified by thermal annealing in air at T ≥ 850°C. A comparative analysis of the data shows that the
near-UV and visible photoluminescence of alumina anodized in a sulfuric acid solution is caused primarily by oxygen divacancies
(F2, F2+ _2^{+} , and F22 + _2^{2 + } centers), while sulfate ions have little effect on the luminescence properties of anodic alumina in this spectral range. |
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