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Proceedings Paper

Optical Switching In "Complementary" Electrochromic Windows
Author(s): Stuart F. Cogan; Timothy D. Plante; Robert S. McFadden; R. David Rauh
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Paper Abstract

The electrochemical and optical switching characteristics of a variety of variable transmittance complementary electrochromic windows are presented. The complementary configurations are based on hydrogen insertion in cathodically coloring amorphous WO3 and crystalline KxWO3+(x/2) combined with anodically coloring IrO2. These windows exhibit typical transmittance modulations from 70 to 15% in the visible spectrum and undergo ca. 4000 to 6000 switching cycles without degradation. The optical switching characteristics are discussed in terms of the complementary device structure and the electrochemistry of the individual electrochromic layers.

Paper Details

Date Published: 23 February 1987
PDF: 7 pages
Proc. SPIE 0692, Materials and Optics for Solar Energy Conversion and Advanced Lightning Technology, (23 February 1987); doi: 10.1117/12.936665
Show Author Affiliations
Stuart F. Cogan, EIC Laboratories, Inc. (United States)
Timothy D. Plante, EIC Laboratories, Inc. (United States)
Robert S. McFadden, EIC Laboratories, Inc. (United States)
R. David Rauh, EIC Laboratories, Inc. (United States)


Published in SPIE Proceedings Vol. 0692:
Materials and Optics for Solar Energy Conversion and Advanced Lightning Technology
Sandor Holly; Carl M. Lampert, Editor(s)

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