Amorphous titanium dioxide film with improved electrochromism in near-infrared region

被引：20
|
作者：
Zhang, Bo [1 ]
Xu, Chen [1 ]
Xu, Guoyue [1 ]
Tan, Shujuan [1 ]
Zhang, Jianchao [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Jiang Jun St 29, Nanjing 211106, Jiangsu, Peoples R China
来源：
OPTICAL MATERIALS | 2019年 / 89卷
基金：
中国国家自然科学基金;
关键词：
Amorphous TiO2; Electrochromism; Near-infrared; Optical property; DOPED WO3 FILM; THIN-FILMS; DEVICE; PERFORMANCE;
D O I：
10.1016/j.optmat.2019.01.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 cm(2)/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 x 10(4) s, which indicates excellent reversible stability in the ECD.
引用
收藏
页码：191 / 196
页数：6
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