With the aim of producing all-solid-state electrochromic mirrors, La 0.67−x Li 3x TiO 3 (LLTO) and the WO 3 were prepared by electron beam deposition. The LLTO (with x = 0.11) powder was synthesized by thermally ball-grinding method and the Li + ionic conductivity of the LLTO ceramic targets was found to be of ca. 3.25 × 10 −3 S/cm. Using LLTO targets for e-beam evaporation, 300 nm-thick films with the Li + ionic conductivity of 5.50 × 10 −5 S/cm were deposited. Combining LLTO films with WO 3 /ITO and LiMn 2 O 4 layers, all-solid-state electrochromic mirrors with a laminar structure of Al/LiMn 2 O 4 /LLTO/WO 3 /ITO were prepared. The reversible reflectance of the mirrors was well controlled by applying polarized potentials onto the ITO electrode. The obtained results suggest useful applications for electrochromic windows working as a smart reflectance mirror that can be used for auto rear-view mirrors.
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