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Affiliation of Author(s):材料科学与技术学院

Journal:Opt Mater

Abstract:Titanium dioxide (TiO2) film and hybrid electrolyte are prepared via sol-gel method to fabricate solid-state electrochromic device (ECD). Electrochromic performance of the ECD has been studied in the near-infrared region. By optimizing the supplied pulse voltages and TiO2 film thickness, the high coloration efficiency (79.4 cm2/C at 1000 nm) has been obtained for the ECD under the pulse voltages of ±1.6 V. Additionally, the switch time of 16.1 s and 2.8 s is respectively achieved for coloring and bleaching at −1.6 and + 1.6 V. The fast switching speed between bleached and colored states results from the porous structure of solution-based TiO2 film that improves the Li+ ions release/insert. Stable current-cycle behavior has been achieved by cyclic tests with alternating pulse voltages within 2 × 104 s, which indicates excellent reversible stability in the ECD. © 2019 Elsevier B.V.

ISSN No.:0925-3467

Translation or Not:no

Date of Publication:2019-03-01

Co-author:Zhang, Bo,Xu, Chen,xucheng,xgy,Tan Shu Juan,Zhang, Jianchao

Correspondence Author:Zhang, Bo,Wang Changbo