Optical Properties of Nanostructured WO<sub>3</sub> Films

Authors

  • S. S. Fomanyuk Vernadsky Institute of general and inorganic chemistry of National Academy of Sciences of Ukraine
  • G. Ya. Kolbasov Vernadsky Institute of general and inorganic chemistry of National Academy of Sciences of Ukraine
  • Yu. S. Krasnov Vernadsky Institute of general and inorganic chemistry of National Academy of Sciences of Ukraine
  • V. N. Zaichenko Vernadsky Institute of general and inorganic chemistry of National Academy of Sciences of Ukraine

Abstract

Nanostructured hydrated WO3 films deposited on glass and on glass with a layer of SnO2 or with Au film have been obtained by chemical and electrochemical methods. The angular and spectral dependences of total internal reflection and surface plasmon resonance for different values of oxide potential have been measured on fabricated planar glass-WO3 and glass-Au-WO3 structures placed in an electrolyte (0,5M H2SO4). These dependences were compared with the results of computer simulation, using experimental values of n and k for these WO3 films, prepared by interferometry. It has been shown that in presence of thin catalyst layer (Pt or Pd) on  WO3 surface optical hydrogen sensors for the determination of hydrogen content in  air at 0-5 vol.% H2 can be created  based on these structures.

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(1)
Fomanyuk, S. S.; Kolbasov, G. Y.; Krasnov, Y. S.; Zaichenko, V. N. Optical Properties of Nanostructured WO<sub>3< Sub> Films. Him. Fiz. Tehnol. Poverhni 2011, 2, 308-313.

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Vol. 2 No. 3 (2011): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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