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Highly-efficient electrochromic performance of nanostructured TiO2 films made by doctor blade technique

Title:

Highly-efficient electrochromic performance of nanostructured TiO2 films made by doctor blade technique

Nang Dinh, Nguyen and Minh Quyen, Nguyen and Chung, Do Ngoc and Zikova, Marketa and Truong, Vo-Van (2011) Highly-efficient electrochromic performance of nanostructured TiO2 films made by doctor blade technique. Solar Energy Materials and Solar Cells, 95 (2). pp. 618-623. ISSN 09270248

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Official URL: http://dx.doi.org/10.1016/j.solmat.2010.09.028

Abstract

Electrochromic TiO2 anatase thin films on F-doped tin oxide (FTO) substrates were prepared by doctor blade method using a colloidal solution of titanium oxide with particles of 15 nm in size. The films were transparent in the visible range and well colored in a solution of 1 M LiClO4 in propylene carbonate. The transmittances of the colored films were found to be strongly dependent on the Li+ inserted charges. The response time of the electrochromic device coloration was found to be as small as 2 s for a 1 cm2 sample and the coloration efficiency at a wavelength of 550 nm reached a value as high as 33.7 cm2 C−1 for a 600 nm thick nanocrystalline-TiO2 on a FTO-coated glass substrate. Combining the experimental data obtained from in situ transmittance spectra and in situ X-ray diffraction analysis with the data from chronoamperometric measurements, it was clearly demonstrated that Li+ insertion (extraction) into (out of) the TiO2 anatase films resulted in the formation (disappearance) of the Li0.5TiO2 compound. Potential application of nanocrystalline porous TiO2 films in large-area electrochromic windows may be considered.

Divisions:Concordia University > Faculty of Arts and Science > Physics
Item Type:Article
Refereed:Yes
Authors:Nang Dinh, Nguyen and Minh Quyen, Nguyen and Chung, Do Ngoc and Zikova, Marketa and Truong, Vo-Van
Journal or Publication:Solar Energy Materials and Solar Cells
Date:February 2011
Keywords:Nanostructured TiO2 film; Transmittance spectra; Electrochromic properties; Li-insertion/extraction; ECD coloration
ID Code:7114
Deposited By:DANIELLE DENNIE
Deposited On:02 Mar 2011 13:26
Last Modified:02 Mar 2011 13:26
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