Abstract

Electrochromic NiO_xH_y coatings were produced by rf magnetron sputtering of Ni in the presence of H₂ and O₂ followed by treatment of the films in KOH. Spectral transmittance and reflectance were measured in the 0.35 ≤ λ ≤ 2.5-μm wavelength range. The integrated luminous and solar transmittance could be varied between ≈75 and 10% and between ≈75 and 20%, respectively. Electrochromic coloration was found to be associated with the formation of a broad absorption band centered at λ ≈ 0.8 μm.

© 1987 Optical Society of America

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