Author(s)

Le Dinh Trong¹, Nguyen Nang Dinh², Do Hong Thanh³

¹Hanoi Pedagogical University 2, Phuc Yen, Vietnam.
²University of Engineering and Technology, Vietnam National University, Hanoi, Vietnam.
³Department of Science and Technology of Tuyen Quang Province, Tuyen Quang City, Vietnam.

With the aim of producing all-solid-state electrochromic mirrors, La_0.67–xLi_3xTiO₃ (LLTO) and the WO₃ 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 WO₃/ITO and LiMn₂O₄ layers, all-solid-state electrochromic mirrors with a laminar structure of Al/LiMn₂O₄/LLTO/WO₃/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.

Ionic Conductivity, Electron Beam Deposition, All-Solid-State Electrochromic Mirror, Impedance Measurement, Reflectance Spectra

Trong, L. , Dinh, N. and Thanh, D. (2016) Preparation and Characterization of La_0.67–x Li_3x TiO₃ Solid-State Electrolyte Used for Electrochromic Mirrors. Materials Sciences and Applications, 7, 702-709. doi: 10.4236/msa.2016.711056.