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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