Abstract
An electroactive poly(3,4-(2,2-dimethylpropylenedioxy)thiophene) (PProDOT-Me2) thin film was electropolymerized by cyclic voltammetry technique, and its electrochemical and electrochromic properties were systematically studied. The prepared PProDOT-Me2 thin film was electrochemically reversible, and it showed a linear relation between peak current with scan rates. The electrochemical impedance spectrum also indicated the diffusion limitation of the film during charge/discharge process. The film showed a good color contrast (60 %) with a low applying potential of 1.2 V. The electrochromic window (ECW) based on PProDOT-Me2 film was fabricated and studied for its electrochromic performance. The color contrast of the device was achieved as 36 % at λmax of 560 nm. The switching speed of fabricated ECW for coloring and bleaching were almost 0.7 s in a range of +1.5 to −1.5 V. The fabricated device showed better cyclic current response and remarkable switching stability over 100 cycles. The novelty of the electrochromic window based on PProDOT-Me2 is the maximum absorbance at photopic wavelength that would be highly sensitive to human eyes.
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We thank Council of Scientific and Industrial Research (CSIR), Government of India for financial support.
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Lakshmanan, R., Raja, P.P., Shivaprakash, N.C. et al. Fabrication of fast switching electrochromic window based on poly(3,4-(2,2-dimethylpropylenedioxy)thiophene) thin film. J Mater Sci: Mater Electron 27, 6035–6042 (2016). https://doi.org/10.1007/s10854-016-4527-0
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DOI: https://doi.org/10.1007/s10854-016-4527-0