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Dynamic behaviors of inorganic all-solid-state electrochromic device: Role of potential

  • Qirong Liu
  • , Qianqian Chen
  • , Qianqian Zhang
  • , Guobo Dong
  • , Xiaolan Zhong
  • , Yu Xiao
  • , Marie Paule Delplancke-Ogletree
  • , François Reniers
  • , Xungang Diao*
  • *Corresponding author for this work
  • Beihang University
  • ULB-BUAA Plasma Laboratory for Materials and Environment
  • Université libre de Bruxelles

Research output: Contribution to journalArticlepeer-review

Abstract

Applied potential plays a significant role in the properties of electrochromic devices (ECDs), for example, cyclic property, optical modulation, and response rate. In this study, inorganic all-solid-state ECDs with the multilayer structure of Glass/ITO/NiOx/Ta2O5/LiNbO3/Ta2O5/WO3/ITO were prepared by magnetron sputtering. The potential dependence of charges dynamic behaviors in the ECDs were analyzed on the basis of cyclic voltammograms (CVs), chronoamperograms (CAs), multi-potential steps, and in-situ optical transmittance at 550 nm. Results demonstrated that the trapping of Li+ ions in NiOx layer and in WO3 layer were responsible for the degradation of electrochromic properties of the ECDs operated at different potential ranges. Besides, the dynamic behavior of Li+ ions in WO3 layer, acting as the primary electrochromic layer in the ECDs, had a crucial influence on the response characteristics of the ECDs. Excellent optical memory effects at randomly electrochromic extent were observed and the corresponding open-circuit potential was relevant to the chemical potential of the ECDs.

Original languageEnglish
Pages (from-to)617-623
Number of pages7
JournalElectrochimica Acta
Volume269
DOIs
StatePublished - 10 Apr 2018

Keywords

  • All-solid-state
  • Applied potential
  • Dynamic behaviors
  • Electrochromic device
  • Inorganic

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