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Proceedings Paper

Infrared Properties Of Electrochromic Materials
Author(s): Stuart F. Cogan; R. David Rauh; John D. Westwood; Douglas I. Plotkin; Rochelle B. Jones
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Paper Abstract

Thin films of crystalline LiXWO3 exhibit large increases in infrared reflectance (2-16 μm) on lithium insertion, in keeping with the Drude model of free electron reflectance. Amorphous LixWO3 and weakly crystalline LixV2O5 maintain a high degree of infrared transparency for 0<x<0.5. By contrasting the infrared reflectance of a crystalline LixWO3 film against an absorptive substrate, coatings with variable IR emittance can be obtained. An emittance modulation of 0.25-0.82 in the 8-12 μm region has been obtained with crystalline LixWO3 on glass substrates. The design and electrochromic materials requirements for variable emittance coatings are discussed.

Paper Details

Date Published: 12 December 1989
PDF: 5 pages
Proc. SPIE 1149, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VIII, (12 December 1989); doi: 10.1117/12.962161
Show Author Affiliations
Stuart F. Cogan, EIC Laboratories (United States)
R. David Rauh, EIC Laboratories (United States)
John D. Westwood, EIC Laboratories (United States)
Douglas I. Plotkin, EIC Laboratories (United States)
Rochelle B. Jones, EIC Laboratories (United States)

Published in SPIE Proceedings Vol. 1149:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VIII
Claes-Goeran Granqvist; Carl M. Lampert, Editor(s)

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