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- W2153397265 abstract "Luminescense spectra of thin films and single crystals of YBa2Cu3O7−x high-temperature superconductors were measured under optical excitation by synchrotron radiation (E = 10.2 eV) and by electrons (cathodoluminescence) with an energy of 6 keV. It has been shown that in all the spectra the main contribution is made by a blue band with an energy of ≈2.9 eV, which is, apparently, the luminescence inherent to the crystal. The time characteristics of luminescence were measured. It turned out that 80% of all the luminescence requires a very long time (τ > 10−6 s) to reach its final level. A model of luminescence appearance is proposed, which is based on luminescence of oxygen quasi-molecules formed by the decay of electronic excitations (luminescence of self-localized and defect-localized excitons)." @default.
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- W2153397265 date "1991-01-01" @default.
- W2153397265 modified "2023-09-23" @default.
- W2153397265 title "Luminescence of high-temperature yttrium-based superconductors" @default.
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- W2153397265 doi "https://doi.org/10.1016/0022-2313(91)90254-s" @default.
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