Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 93, Issue 5, Pages 625-629Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2008.12.021
Keywords
Complementary electrochromic device; Polyaniline; Polyhedral oligomeric silsesquioxane; Tungsten oxide
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In this paper we report a high-contrast complementary electrochromic device based on polyanilinetethered polyhedral oligomeric silsesquioxane (POSS-PANI) and tungsten oxide (WO3) The electrochromic properties, cyclic voltammetry behavior and coloration efficiency of the device are Studied. Due to the loosely packed structure of POSS-PANI, it possesses more accessible doping sites and hence gives rise to a significantly higher electrochromic contrast than polyaniline (PANI). Furthermore, the replacement of PANI with POSS-PANI as the complementary layer for WO3 leads to an enhanced complementary effect, for which the underneath mechanism is also discussed. (C) 2009 Elsevier B.V. All rights reserved.
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