Porous CuWO4/WO3 composite films with improved electrochromic properties prepared by sparking method

被引：26
|
作者：
Thongpan, Winai [1 ,2 ]
Louloudakis, Dimitrios [3 ]
Pooseekheaw, Porntipa [1 ]
Kumpika, Tewasin [1 ]
Kantarak, Ekkapong [1 ]
Sroila, Wattikon [1 ]
Panthawan, Arisara [1 ]
Thongsuwan, Wiradej [1 ,4 ]
Singjai, Pisith [1 ,4 ]
机构：
[1] Chiang Mai Univ, Dept Phys & Mat Sci, Fac Sci, Chiang Mai 50200, Thailand
[2] Chiang Mai Univ, PhDs Degree Program Appl Phys, Fac Sci, Chiang Mai 50200, Thailand
[3] FORTH, IESL, GR-70013 Iraklion, Greece
[4] Chiang Mai Univ, Ctr Excellence Mat Sci & Technol, Chiang Mai 50200, Thailand
来源：
MATERIALS LETTERS | 2019年 / 257卷
关键词：
Electrochromic properties; CuWO4/WO3 composite films; Porous films; Sparking method; THIN-FILMS; DEPOSITION; PERFORMANCE; TIO2;
D O I：
10.1016/j.matlet.2019.126747
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The porous CuWO4/WO3 composite films with various atomic ratios have been fabricated on indium-doped tin oxide glass substrates by sparking method. The structural, morphological, optical, and electrochromic properties of samples have been investigated. The SEM image revealed porosity morphology of deposited films which is highlight of the sparking method. The CuWO4/WO3 composite in monoclinic structure were confirmed by XRD, Raman spectroscopy, and XPS. Compared with pure WO3 film, CuWO4/WO3 composite film at Cu/W atomic ratios of 0.29 shows improved coloration efficiency from 49.6 to 74.4 cm(2)/C which confirmed by cyclic voltammetry. Moreover, fast switching speeds of 1.9 s and 1.6 s for the coloration and bleaching state were observed for the film containing this ratio. (C) 2019 Elsevier B.V. All rights reserved.
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页数：5
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