Electrochromic properties of MoO3-WO3 thin films prepared by a sol-gel method, in the presence of a triblock copolymer template | Health & Environmental Research Online (HERO)

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Citation
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HERO ID

4847547

Reference Type

Journal Article

Title

Electrochromic properties of MoO3-WO3 thin films prepared by a sol-gel method, in the presence of a triblock copolymer template

Author(s)

Jittiarporn, P; Sikong, Lek; Kooptarnond, K; Taweepreda, W; Stoenescu, S; Badilescu, S; Truong, VoVan

Year

2017

Is Peer Reviewed?

Journal

Surface and Coatings Technology
ISSN: 0257-8972

Volume

327

Page Numbers

66-74

DOI

10.1016/j.surfcoat.2017.08.012

Web of Science Id

WOS:000412788800009

Abstract

Hybrid MoO3-WO3 thin films were deposited on conductive indium tin oxide (ITO) glass substrates by a sol-gel dip-coating technique. The influence of the annealing temperature (200-500 degrees C), concentration of MoO3 (0-10%), and Pluronic P123 triblock copolymer (0-20% w/v) used as a template, were investigated. It was found that the 5% MoO3-95% WO3 films prepared without template and annealed at 200 degrees C, exhibited the highest coloration efficiency, the best cycling stability and shortest response time, an overall improvement with respect to a WO3 film. It is thought that the surface roughness and the low crystallinity of the films contribute to their improved electrochromic properties. In addition, porous MoO3-WO3 films with well-connected micro-pores, prepared with 2% w/v Pluronic P123 and annealed at 300 degrees C, showed significantly improved electrochromic performance. (C) 2017 Elsevier B.V. All rights reserved.

Keywords

Electrochromic properties; MoO3-WO3; Sol-gel method; Porous films; Template