Annealing effect on the electrochromic properties of amorphous WO3 films in Mg2+ based electrolytes

被引：16
|
作者：
Chen, Xi [1 ]
Li, Wenjie [2 ]
Wang, Lebin [1 ]
Zhao, Yingming [1 ]
Zhang, Xiang [1 ]
Li, Yao [1 ]
Zhao, Jiupeng [2 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2021年 / 270卷
基金：
中国国家自然科学基金;
关键词：
Electrochromic device; WO3; Electron beam evaporation; THIN-FILMS; TUNGSTEN-OXIDE; SMART WINDOWS; DEVICES; INTERCALATION; EVAPORATION; PERFORMANCE; DEPOSITION; BUILDINGS; ION;
D O I：
10.1016/j.matchemphys.2021.124745
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrochromic (EC) devices have many important commercial applications ranging from car rear-view mirrors, e-paper, sunglasses, to architectural smart windows. The corrosiveness of acid and the unsafety of Li+ based electrolyte are the significant issues that restrict the performance and large-scale application of EC devices. The bivalent cation Mg2+ has been proved to be efficient EC insertion ion to solve these issues. In this study, the WO3 films are deposited on ITO glass substrates by electron beam evaporation and the influence of annealing on the structure, morphology and optical properties are studied. The diffusion coefficient of Mg2+ in WO3 films is 10- 11-10- 10 cm2/s, and decreases with increase of annealing temperature. The WO3 films annealed at 200 degrees C shows the lager Delta T and long-term cyclic stability. Meanwhile, the Delta T of EC device with the structure of Glass/ ITO/WO3/MgCl2 liquid Electrolyte/ITO/Glass is approximately 34.6%. These findings provides huge support for the application of Mg2+ based electrolyte in the new generation of EC devices.
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页数：7
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