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- W1504155079 abstract "Hybrid thin films consisting of oxidized nano-silicon doped with terbium have been fabricated. Nano-silicon was formed by electrochemical etching of silicon wafers. Terbium was incorporated into nano-silicon pores by electrochemical deposition. Different oxidizing thermal treatments were applied to the films. The samples treated by high-pressure water vapor annealing (HWA) exhibited strong blue emission with a phosphorescent component, as previously reported by our group. The low temperature (260 °C) HWA also led to strong emission from Tb3+ ions, whereas typical high temperature (900 °C) treatment generally used to activate Tb3+ ions in silicon-based materials led to less luminescent samples. Spectroscopic and dynamic analyses suggest that terbium was incorporated as a separate oxide phase in the pores of the porous nano-silicon. The PL of the terbium phase and nano-silicon phase exhibit different temperature and excitation power dependences suggesting little optical or electronic interaction between the two phases. The luminescence of terbium is better activated at low temperature (260 °C) than at high temperature (900 °C). The hybrid material may find some applications in photonics, for instance as a display material. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
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- W1504155079 date "2012-10-29" @default.
- W1504155079 modified "2023-10-01" @default.
- W1504155079 title "Optical properties of phosphorescent nano-silicon electrochemically doped with terbium" @default.
- W1504155079 doi "https://doi.org/10.1002/pssc.201200226" @default.
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