4.7 Article

Effect of the thicknesses of the Al2SiO5 ion conductor on the opto-electrical properties for all-solid electrochromic devices

期刊

CERAMICS INTERNATIONAL
卷 48, 期 21, 页码 31491-31499

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.07.068

关键词

All -solid-state; Electrochromic device (ECD); Al 3+ionic conductor; Magnetron sputtering

资金

  1. National Natural Science Foundation of China [52102358]
  2. Science and Technology Program of Guangdong [2020B1212060049]
  3. Guangdong Special Support Program [2019BT02C629]
  4. GDAS Project of Science and Technology Development [2022GDASZH-2022010103]
  5. Shenzhen Science and Technology Innovation Commission [20200812092703001]

向作者/读者索取更多资源

An all-solid-state electrochromic device (ECD) was prepared, and the effect of solid electrolyte thickness on opto-electrical performance was investigated. The results showed that surface morphology and looseness significantly influenced the device's properties. Increasing thickness improved ion conductivity and enhanced opto-electrical properties.
In this study, an all-solid-state electrochromic device (ECD) with the structure of ITO/WO3/Al2SiO5/NiOx/ITO was prepared, and the effect of the Al2SiO5 solid electrolyte thicknesses on the opto-electrical performance was investigated. The microstructure and surface morphology were characterized using XRD, SEM and AFM, and the surface morphology and degree of surface looseness demonstrate a significant influence on the opto-electrical properties of ECDs. The charge transfer dynamics at the solid-solid interface were characterized using EIS to obtain an ionic conductivity of 4.637 x 10-8 S/cm. CV, CA and UV-Visible spectra were employed to record the in situ electrochemical and optical properties. The results revealed that the highest optical modulation was 44.58%, the coloring and bleaching times were 14.8 s and 3.7 s, and the highest coloring efficiency was 98.17 cm2/C, which indicates that excellent opto-electrical properties were obtained. When the thickness increases, the degree of surface dense morphology transforms, and the loose morphology is more favorable for ion conduc-tivity, which improves the opto-electrical properties. The results in this study provide insights into the under-standing of Al3+-based all-solid-state ECDs, which promote the exploration of new types of Al3+ ionic conductors for all-solid-state ECDs.

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