Enhanced electrochromic characteristics induced by Au/PEDOT/Pt microtubes in WO3 based electrochromic devices
By Karaca, G
Published in Optical Materials
2019
Abstract
A study has been carried out on improving electrochromic performances of tungsten trioxide (WO3) thin films-based electrochromic devices (ECDs) with inclusion of gold/poly (3, 4-ethylenedioxythiophene)/platinum (Au/PEDOT/Pt) microtubes. The deposited film characteristics were evaluated using scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS). SEM results indicated that homogeneous spreading of Au/PEDOT/Pt microtubes are successfully obtained onto the WO3 layer. The electrochromic performances such as electrochromic contrast, response times and charge transfer resistance were investigated and compared with Au/PEDOT/Pt microtubes-free system in detail. Higher optical contrast (26%) and faster response times (bleaching time (tb): 13.83 s, coloration time (tc): 19.25 s) were obtained for electrochromic device made from Au/PEDOT/Pt microtubes against an applied potential of
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