The unsafe deposition process and slow deposition rate of the electrolyte layers are the main obstacles for electrochromic devices (ECDs) toward commercial application. In this work, an ECD with a structure of glass/ITO/WO3/LiF/NiO/ITO has been prepared by electron beam and resistance evaporation methods. The LiF electrolyte is deposited by resistance evaporation with the LiF particles and shows promising potential as the Li+ based electrolyte in ECDs owing to its high transparency and good ionic conductivity. The ECD shows a fast response (4.0 s for bleaching and 9.6 s for coloring), large optical transmittance modulations (∼58.9% at 625 nm, 100 s for coloring), good stability and high coloration efficiency (88.5 cm2 C-1). This work not only indicates that LiF can be used as a Li+ based electrolyte in an ECD, but also paves a new way to fast and safe preparation of ECDs with high performance.

中文翻译：

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所有基于LiF电解质的固态电致变色器件。

电解质层的不安全沉积过程和缓慢的沉积速率是电致变色器件（ECD）走向商业应用的主要障碍。在这项工作中，已经通过电子束和电阻蒸发方法制备了具有玻璃/ ITO / WO3 / LiF / NiO / ITO结构的ECD。LiF电解质通过与LiF颗粒的电阻蒸发而沉积，由于其高透明度和良好的离子电导率，在ECD中作为Li +基电解质具有广阔的发展前景。ECD显示出快速响应（漂白4.0 s，着色9.6 s），大的光透射率调制（625 nm处约58.9％，着色100 s），良好的稳定性和高着色效率（88.5 cm2 C-1）。这项工作不仅表明LiF可以在ECD中用作基于Li +的电解质，