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Proceedings Paper

Optical switches based on semiconducting vanadium dioxide films prepared by the sol-gel process
Author(s): Richard S. Potember; Kenneth R. Speck
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Paper Abstract

Vanadium dioxide thin films have been grown from vanadium tetrakis (t-butoxide) by the sol-gel process. A new method for the synthesis of the vanadium precursor was also developed. Films were deposited by dipcoating glass slides from an isopropanol solution, followed by postdeposition annealing of the films at 600°C under nitrogen. The properties of these films, to a high degree, were a function of crystalline boundaries and crystalline grain size. These gel-derived V02 films undergo a reversible semiconductor-to-metal phase transition near 72°C, exhibiting characteristic resistive and spectral switching comparable with near stoichiometric V02 films prepared on non- crystalline substrates by other techniques. Paralleling the investigation of pure V02, films were doped with hexavalent transition metal oxides to demonstrate lowering of the transition of the transition temperature.

Paper Details

Date Published: 1 November 1990
PDF: 11 pages
Proc. SPIE 1328, Sol-Gel Optics, (1 November 1990); doi: 10.1117/12.22575
Show Author Affiliations
Richard S. Potember, Johns Hopkins Univ. (United States)
Kenneth R. Speck, Johns Hopkins Univ. (United States)


Published in SPIE Proceedings Vol. 1328:
Sol-Gel Optics
John D. Mackenzie; Donald R. Ulrich, Editor(s)

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