Home > Archive>Volume 51, Issue 1, 2021 >68-75. DOI:10.12044/j.issn.1007-2330.2021.01.011
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Preparation and Electrochromic Properties of Flexible AgNWs/ITO/WO3 Films
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Affiliation:

1.School of Materials Science and Engineering，Lanzhou Jiaotong University，Lanzhou 730070;2.School of Energy and Power Engineering，Beihang University，Beijing 100191;3.School of Physics，Beihang University，Beijing 100191

Clc Number:

TB34

Fund Project:

The National Natural Science Foundation of China (51862022、61875005)

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    Abstract:

    To solve the problem of poor performance of electrochromic films，which is the critical problem of electrochromic devices adapting to the current demand，the indium-tin oxide （ITO）/tungsten oxide （WO3） films were prepared at room temperature by DC reactive magnetron sputtering on the polyethylene terephthalate （PET）/silver nanowire （AgNWs）.The photoelectric properties of AgNWs/ITO composite electrodes and the electrochromic properties of PET/AgNWs/ITO/WO3 films were investigated. The results show that the sheet resistance of the ITO-compositing electrode is significantly lower than that of AgNWs electrode，and the surface is more uniform and smoother.Thereby it overcomes the uneven coloring and rapid performance degradation after a single cycle of the WO3 film.The transmittance modulation of the flexible electrochromic film is 57.4% （at 550 nm） and 69.6% （at 1 000 nm），the colored and bleached response time is 10.4 s and 9.9 s，while the corresponding colored and bleached efficiency is 27.79 cm2/C and 40.45 cm2/C，respectively.In addition，the film can still maintain high transmittance modulation after more than 500 cycle stability tests and 2 000 bending tests，showing great application potential in the field of flexible electrochromic.

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History
  • Received:April 06,2020
  • Revised:September 03,2020
  • Adopted:April 07,2020
  • Online: February 19,2021
  • Published: February 28,2021
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