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Electrochromic and structural characteristics of mesoporous WO3 films prepared by a sol-gel method

Electrochromic and structural characteristics of mesoporous WO3 films prepared by a sol-gel method

Solarska, Renata, Alexander, Bruce and Augustynski, Jan (2004) Electrochromic and structural characteristics of mesoporous WO3 films prepared by a sol-gel method. Journal of Solid State Electrochemistry, 8 (10). pp. 748-756. ISSN 1432-8488 (Print), 1433-0768 (Online) (doi:10.1007/s10008-004-0541-x)

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Abstract

The preparation of electrochromic films of mesoporous tungsten trioxide from tungstic acid and tungstic hexaethoxide precursors with the addition of an organic stabiliser via a sol-gel method is reported. These films have been structurally characterised and both the film morphology and crystalline composition of the films were found to be significantly dependent on the temperature at which the films were annealed and upon the choice of precursor. Films annealed at lower temperatures consisted of amorphous and hexagonal tungsten trioxide, whereas films annealed above 500 degreesC comprised solely of monoclinic WO3. The electrochromic activity of the films was found to be equally dependent on method of preparation, and both the composition and the structure of the WO3 films were shown to clearly influence the colouration efficiency of the films.

Item Type: Article
Additional Information: [1] Dedicated to Zbigniew Galus on the occasion of his 70th birthday [2] This work was supported by the Swiss National Science Foundation and the Swiss Federal Office of Energy. [3] See also item 7017 - same article, different journal
Uncontrolled Keywords: tungsten trioxide, mesoporous film, electrochromism, raman spectroscopy, sol-gel synthesis
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 17 Oct 2016 09:11
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/7038

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