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Growth and Electrochromic Properties of Poly(3,4-ethylenedioxythiophene) Layer on TiO2 Nanoparticles

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The growth of the conductive layer on TiO2 nanoparticles was examined. Poly(3,4-ethylenedioxythiophene)(PEDOT)was deposited on the mesoporous TiO2 nanoparticle by the chemical polymerization of 3,4-ethylenedioxythiophene (EDOT)under oxidative conditions, to afford PEDOT coated particles having average diameter of ∼75 nm. The growth of PEDOT on TiO2 was confirmed by a field emission-scanning electron microscopy (FE-SEM) and electrochemistry. All-solid-state electrochromic devices were fabricated using the PEDOT-on-TiO2 coated electrode and the solid polymer electrolyte as the ion conduction layer. Evaluation of the optical and electrochromic (EC) response was performed by monitoring the intensity of absorbance at the absorption wavelength of 600 nm under different conditions of applied potential. A fast electrochromic response and an efficient EC process with a blue color change was observed from the device constructed with nano-structured PEDOT.


Document Type: Research Article


Publication date: 2008-09-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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