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Proceedings Paper

Electrochromic properties and temperature dependence of chemically deposited Ni(OH)x thin films
Author(s): Marcia C.A. Fantini; George H. Bezerra; C. R. C. Carvalho; Annette Gorenstein
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Paper Abstract

Thin films of Ni(OH)x prepared by an alternately dipping deposition (ADD) technique onto ITO substrates present electrochromic efficiencies of 35 cm2/c and optical density variation around 30% on bleaching/coloring cycles in 0.1 M KOH solution. The dependence of the electrochromic performance on the stoichiometry, structure, and morphology of the studied material was investigated by means of variations on those properties induced by heat treatments. The ADD technique also allowed the growth of samples in a powder form that could be analyzed easily by TGA, DSC, and XRD. The results point out that changes in stoichiometry are followed by changes in structure and that the presence of OH radicals in this material is essential for the observation of electrochromic contrast.

Paper Details

Date Published: 1 December 1991
PDF: 12 pages
Proc. SPIE 1536, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion X, (1 December 1991); doi: 10.1117/12.49215
Show Author Affiliations
Marcia C.A. Fantini, Univ. de Sao Paulo (Brazil)
George H. Bezerra, Instituto de Pesquisas Tecnologicas (Brazil)
C. R. C. Carvalho, UNICAMP (Brazil)
Annette Gorenstein, UNICAMP (Brazil)

Published in SPIE Proceedings Vol. 1536:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion X
Carl M. Lampert; Claes G. Granqvist, Editor(s)

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