Electrochromic Mirrors With Variable Reflectance

Friedrich G. K. Baucke

doi:10.1117/12.938308

24 September 1986 Electrochromic Mirrors With Variable Reflectance

Friedrich G. K. Baucke

Proceedings Volume 0653, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V; (1986) https://doi.org/10.1117/12.938308
Event: 1986 International Symposium/Innsbruck, 1986, Innsbruck, Austria

Abstract

Unstructured electrochromic mirrors with variable reflectance have been developed on the basis of hydrogen tungsten bronzes. The characteristic compounds of these devices are (1) solid ion-conducting layers ("electrolytes") resulting in only few micrometer thick all-solid-state systems, which can be enclosed between the substrate and a second glass plate and are thus protected from the environment, (2) integrated reflecting metal layers, and (3) hydrogen-storing electrochromic layers. Two basically different constructions are feasible. In "diffusion-driven" devices the bronze is formed (decomposed) by the chemical reaction x/2 H2+ W03⇔HxW03, in "field-driven" systems an electrochemical bronze formation (decomposition), x H + W03+ x e HxW03, takes place. The modes of construction are presented and compared, the electrochemistry of the thin layer cells involved is discussed, the prop-erties of devices according to the state of development are reported, and possible applications, e.g. as glare-free, inside and outside, automotive rear view mirrors with adjustable reflectance, are briefly described.

Citation Download Citation

Friedrich G. K. Baucke "Electrochromic Mirrors With Variable Reflectance", Proc. SPIE 0653, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V, (24 September 1986); https://doi.org/10.1117/12.938308

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