A complementary electrochromic device with highly improved performance based on brick-like hydrated tungsten trioxide film
Date
2012Source Title
Journal of Nanoscience and Nanotechnology
Print ISSN
1533-4880
Publisher
American Scientific Publishers
Volume
12
Issue
5
Pages
3838 - 3847
Language
English
Type
ArticleItem Usage Stats
179
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176
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Abstract
Uniform and well adhesive nanostructured hydrated tungsten trioxide (3WO 3•H 2O) films were grown on fluorine doped tin oxide (FTO) substrate via a facile and template-free crystal-seed-assisted hydrothermal method by addition of ammonium sulfate ((NH 4) 2SO 4) and hydrogen peroxide (H 2O 2). X-ray diffraction (XRD) studies indicated that the films are of orthorhombic structure. Scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM) analysis showed that the film was composed of brick-like nanostructures with a preferred growing direction along (002). The influence of seed layer, (NH 4) 2SO 4 and H 2O 2 on the products were also studied. The film showed good cyclic stability, comparable switching speed and coloration efficiency (30.1 cm 2 C -1). A complementary electrochromic device based on the film and Prussian blue depicted highly improved color contrast, coloration/bleaching response (1.8 and 3.7 s respectively) and coloration efficiency (164.6 cm 2 C -1).
Keywords
ElectrochromicTungsten Oxide
Ammonium Sulfate
Color contrast
Coloration efficiencies
Complementary
Cyclic stability
Electrochromics
Fluorine doped tin oxide
Growing direction
Hydrothermal methods
Nano-structured
Orthorhombic structures
Performance based
Prussian blue
Seed layer
Switching speed
Template-free
Tungsten oxide
Tungsten trioxide
Brick
Electrochromic devices
Fluorine
High resolution transmission electron microscopy
Hydration
Hydrogen peroxide
Nanostructures
Scanning electron microscopy
Tin
Tin oxides
Tungsten compounds
X ray diffraction
Tungsten
Permalink
http://hdl.handle.net/11693/28178Published Version (Please cite this version)
http://dx.doi.org/10.1166/jnn.2012.6139Collections
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