12 December 1989 Infrared Properties Of Electrochromic Materials
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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.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Stuart F. Cogan, R. David Rauh, John D. Westwood, Douglas I. Plotkin, Rochelle B. Jones, "Infrared Properties Of Electrochromic Materials", Proc. SPIE 1149, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VIII, (12 December 1989); doi: 10.1117/12.962161; https://doi.org/10.1117/12.962161
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