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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3374
Title: A novel photoelectrochromic device with dual application based on poly(3,4-alkylenedioxythiophene) thin film and an organic dye
Authors: Hsu C.-Y.
Lee K.-M.
Huang J.-H.
Justin Thomas, K. R.
Lin J.T.
Ho K.-C.
Published in: Journal of Power Sources
Abstract: A novel photoelectrochromic device (PECD) with dual application was studied using an electrochromic polymer thin film, poly(3,3-diethyl-3,4-dihydro-2H-thieno-[3,4-b][1,4]dioxepine) (PProDot-Et2), and an organic photosensitive dye, FL dye1, which was adsorbed on a TiO2 electrode. In the presence of the redox couple, the electron transfer reaction at the electrolyte/PProDot-Et2 conducting polymer interface was found to determine the electrochromism of the PECD. The rate constants of the electron transfer (k0) for different redox couples at the PProDot-Et2 film were obtained by using electrochemical impedance spectroscopy (EIS) and were correlated with the coloration depth of the thin film. Since I-/I3- and Br-/Br3- couples possess the highest and the lowest k0 value, respectively, the PECD was investigated using these two redox couples under constant light illumination of 50 mW cm-2. The I-/I3- couple provided a higher short circuit current density (JSC) when acting as a dye-sensitized solar cell (DSSC), thus the switching response upon coloration (ca. 3 s) was much faster than that of the PECD using the Br-/Br3- couple (ca. 2 min). On the contrary, the PECD using Br-/Br3- exhibited a larger transmittance attenuation of ca. 33.7%, in comparison to that using I-/I3- (ca. 14.1%). © 2008 Elsevier B.V. All rights reserved.
Citation: Journal of Power Sources (2008), 185(2): 1505-1508
URI: https://doi.org/10.1016/j.jpowsour.2008.09.031
http://repository.iitr.ac.in/handle/123456789/3374
Issue Date: 2008
Keywords: Dye-sensitized solar cell (DSSC)
Electron transfer
Organic dye
Photoelectrochromic device (PECD)
Poly(3,4-alkylenedioxythiophene)
ISSN: 3787753
Author Scopus IDs: 7404945946
7501498671
36336922700
57203389297
7501725859
56962715200
Author Affiliations: Hsu, C.-Y., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
Lee, K.-M., Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
Huang, J.-H., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
Justin Thomas, K.R., Institute of Chemistry, Academia Sinica, Taipei, 11529, Taiwan
Lin, J.T., Institute of Chemistry, Academia Sinica, Taipei, 11529, Taiwan
Ho, K.-C., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan, Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
Funding Details: The financial support, provided by the National Taiwan University and the National Science Council of Taiwan, under grant number NSC 95-2221-E-002-353-MY2, are gratefully acknowledged.
Corresponding Author: Ho, K.-C.; Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan; email: kcho@ntu.edu.tw
Appears in Collections:Journal Publications [CY]

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