Optical and electrical properties of colored and transparent states of polycrystalline electrochromic WO3 thin films prepared by CVD

Albert Donnadieu; Mohammed Regragui; Ahmed Abdellaoui; Dimitrios Davazoglou

doi:10.1117/12.20445

1 August 1990 Optical and electrical properties of colored and transparent states of polycrystalline electrochromic WO₃ thin films prepared by CVD

Albert Donnadieu, Mohammed Regragui, Ahmed Abdellaoui, Dimitrios Davazoglou

Author Affiliations +

Proceedings Volume 1272, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IX; (1990) https://doi.org/10.1117/12.20445
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

WO polycrystalline thin films were prepared by annealing, at 500 or 600°C in air, o black tungsten layers produced by chemical vapour deposition (CVD) of W(CO)6 on fused quartz or Sn02-coated pyrex substrates. The optical and electrical properties were investigated when the electrochromic samples were in the coloured and bleached states. A passage from a semiconductor to metallic behaviour appears during the colouration. This transition is discussed using the Hubbard-Mott and free electron scattering models.

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Albert Donnadieu, Mohammed Regragui, Ahmed Abdellaoui, and Dimitrios Davazoglou "Optical and electrical properties of colored and transparent states of polycrystalline electrochromic WO₃ thin films prepared by CVD", Proc. SPIE 1272, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IX, (1 August 1990); https://doi.org/10.1117/12.20445

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