Journal
MATERIALS LETTERS
Volume 292, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.129592
Keywords
Sputtering; Thin films; Electrochromic device; Electrolyte; LiAlSiO4; All-solid-state
Funding
- National Key Research & Development Program [2016YFB0303903, 2016YFE0201600]
- National Natural Science Foundation of China [52002097]
- Foundation of Equipment Development Department [6220914010901]
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By utilizing LiAlSiO4 as the electrolyte material, a solid-state electrochromic device with excellent optical performance and stability was successfully prepared. Considering its low cost and abundance of aluminum and silicon, LiAlSiO4 may be recognized as a sustainable electrolyte for future high-performance ECDs.
Herein, LiAlSiO4 was used as electrolyte material for all-solid-state electrochromic devices for the first time, and an electrochromic device (ECD) with the structure of glass/ITO/NiO/Ta2O5/LiAlSiO4/Ta2O5/WO3/ITO was prepared by magnetron sputtering method. Since LiAlSiO4 electrolyte exhibits high transparency and good ionic conductivity, the ECD shows good electrochromic performance including: large optical transmittance modulations (50.8% at 586 nm, 64.1% at 1000 nm), good stability (optical modulation is still maintained at 81.4% (586 nm) and 89.0% (1000 nm) of initial state after 1000 cycles) and high coloration efficiency (60.3 cm(2) C-1 at 586 nm, 150.6 cm(2) C-1 at 1000 nm). Considering the low cost and abundance of Al and Si, LiAlSiO4 may be acknowledged as a sustainable electrolyte for future high-performance ECDs. (C) 2021 Elsevier B.V. All rights reserved.
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