| Electrochromic materials are the research focus of many researchers.When used as an electrochromic material,molybdenum trioxide?MoO3?has the advantages of low driving voltage,large resource reserves,soft colors and long open circuit memory.In the dissertation,an all-solid-state complementary electrochromic device?ASSC-ECD?based on MoO3was prepared by magnetron sputtering.The preparation conditions and characterization of five functional layers of ASSC-ECD were systematically investigated.The indium tin oxide?ITO?of the transparent conductive layer of the device has a square resistance between 13 and 36?/sq,and the visible light band transmittance is about 93%.Lithium tantalate?Li Ta O3?in the electrolyte layer has a loose multi-gap structure with an ion conductivity of about6.02×10-4S/cm.The nickel oxide?Ni Ox?of the ion storage layer has a transmittance of about95%in the visible light band,and there is no significant attenuation after 100 step voltage cycles.The effects of the sputtering pressure of the MoO3layer,the addition of tungsten trioxide?WO3?thin layer,and the incorporation of WO3on the overall performance of ASSC-ECD with ITO/Ni Ox/Li Ta O3/MoO3/ITO structure were studied in detail.Qualitative or quantitative indicators such as optical characteristics,optical modulation range,discoloration response time,and cycle stability are detailedly characterized,and in-depth analysis is performed in combination with material characteristics and physical mechanisms.After the optimization of various preparation processes,the optimal optical modulation range,coloring response time,and fading response time of ASSC-ECD with the best comprehensive performance are 58.8%,7 s and 6 s,respectively;the device,with good optical characteristics,has a strong modulation ability for the transmittance of visible light and can block large partial UV;its cycle stability is also excellent,and there is no significant attenuation under 80 step voltage cycles. |
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