Characterization of Porous WO3 Electrochromic Device by Electrochemical Impedance Spectroscopy
Author
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-04
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
This paper concerns the microstructure of the anodic tungsten oxide (WO3) and its use in an electrochromic (EC) glass device.
When voltages between 100 V and 160 V were applied to tungsten film for 1 h under 0.4 wt.
% NaF electrolyte, porous WO3 film was formed.
The film, which had a large surface area, was used as electrochromic film for EC glass.
The average transmittance in a visible region of the spectrum for a 144 cm2 EC device was above 75% in the bleached state and below 40% in the colored state, respectively.
Repeatability using of the colored/bleached cycles was tested good by a cyclic voltammograms method.
The internal impedance values under colored and bleached states were detected and simulated using an electrical impedance spectra (EIS) technique.
The EC glass impedance characteristics were simulated using resistors, capacitors, and Warburg impedance.
The ITO/WO3, WO3/electrolyte, electrolyte/NiO, and NiO/ITO interfaces can be simulated using a resistance capacitance (RC) parallel circuits, and bulk materials such as the indium tin oxide (ITO) and conducting wire can be simulated by using a series of resisters.
American Psychological Association (APA)
Chen, Chien Chon. 2012. Characterization of Porous WO3 Electrochromic Device by Electrochemical Impedance Spectroscopy. Journal of Nanomaterials،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-1008215
Modern Language Association (MLA)
Chen, Chien Chon. Characterization of Porous WO3 Electrochromic Device by Electrochemical Impedance Spectroscopy. Journal of Nanomaterials No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-1008215
American Medical Association (AMA)
Chen, Chien Chon. Characterization of Porous WO3 Electrochromic Device by Electrochemical Impedance Spectroscopy. Journal of Nanomaterials. 2012. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-1008215
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1008215