Citation

Au, Benedict Wen Cheun and Chan, Kah Yoong and Thien, Gregory Soon How and Yeoh, Mian En and Sahdan, Mohd Zainizan and Murthy, Hanabe Chowdappa Ananda (2023) The Effect of Transparent Conducting Oxide Films on WO3-based Electrochromic Devices with Conducting Polymer Electrolytes. Polymers (Basel), 15 (1). p. 238. ISSN 2073-4360

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Abstract

Over the past few decades, electrochromism has been a prominent topic in energy-saving applications, which is based on the mechanism of altering the optical transmittance of EC materials under the effect of a small applied voltage. Thus, tungsten oxide (WO3) is a significant chemical compound typically applied in electrochromic devices (ECDs) as it is responsible for the optical transmittance variation. In this work, the WO3 films were produced through a sol–gel spin-coating method. The effect of various transparent conducting oxides (TCOs, which are indium-doped tin oxide (ITO), fluorine-doped tin oxide (FTO) glass substrates, and aluminum-doped zinc oxide (AZO)) was investigated in the construction of ECDs. Based on a conducting polymer polypyrene carbonate electrolyte, ITO and aluminum-doped zinc oxide (AZO)-coated glasses were also examined as counter electrodes. The electrode combination employing FTO and ITO as the TCO and counter electrode, respectively, exhibited the most significant coloration efficiency of 72.53 cm2/C. It had coloring and bleaching transmittance of 14% and 56%, respectively, with a large optical modulation of 42%. In addition to that, ECDs with the AZO counter electrode have the advantage of lower intercalation charges compared to ITO and FTO. Hence, this research offers a new avenue for understanding the role of common TCO and counter electrodes in the development of WO3-based ECDs with conducting polymer electrolytes.

Item Type:	Article
Uncontrolled Keywords:	Electrochromic device, sol–gel, transparent conducting oxide, tungsten oxide, polypyrene
Subjects:	T Technology > TP Chemical technology > TP248.13-248.65 Biotechnology
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Nurul Iqtiani Ahmad
Date Deposited:	07 Feb 2023 04:05
Last Modified:	07 Feb 2023 04:05
URII:	http://shdl.mmu.edu.my/id/eprint/11119

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