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A complementary electrochromic device based on W18O49 nanowire arrays and Prussian blue thin films

机译:基于W18O49纳米线阵列和普鲁士蓝薄膜的互补电致变色装置

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摘要

Tungsten oxides (W18O49) nanowire arrays as effective electrochromic working electrodes were fabricated on seed-free FTO glasses through a facile solvothermal process. XRD, FESEM and TEM were used to characterize the phase, morphology and nanostructure. Uniform monoclinic W18O49 nanowire arrays can be obtained at 180 degrees C for 5 h. In the assembled electrochromic device the W18O49 nanowire array films show a fast response and switching time, extracted for a 50% transmittance change of 10.8 s for coloration (t(c)) and 3.1 s for bleaching (t(b)), which surpass current traditional devices using monoclinic tungsten oxide (WO3) as the electrochromic material. The reasons can be attributed to their large specific surface area, special tunnel structure and non-stoichiometry characteristics. A complementary electrochromic device combining the W18O49 nanowire arrays with Prussian blue film shows a higher optical contrast (59.05% at 632.8 nm) and a faster switching response with a coloration time of 6.9 s and a bleaching time of 1.2 s, superior to the single layer W18O49 nanowire device. The complementary device with excellent electrochromic performance demonstrates a great potential for practical application.
机译:氧化钨(W18O49)纳米线阵列作为有效的电致变色工作电极通过容易的溶剂热过程在无菌FTO玻璃上制造。 XRD,FESEM和TEM用于表征相位,形态和纳米结构。均匀的单斜晶型W18O49纳米线阵列可以在180℃下获得5小时。在组装电致变色装置中,W18O49纳米线阵列膜显示出快速响应和切换时间,提取50%的透射率为10.8 s的透射率变化,用于着色(T(c))和3.1 s用于漂白(t(b)),其超越目前使用单斜钨氧化物(WO3)作为电致变色材料的传统风格。原因可以归因于其大的比表面积,特殊隧道结构和非化学计量特性。将W18O49纳米线阵列与普鲁士蓝膜组合的互补电致变色装置显示出更高的光学对比度(632.8nm处的59.05%)和具有6.9 s的着色时间的更快的开关响应,漂白时间为1.2 s,优于单层。 W18O49纳米线装置。具有优异电致变色性能的互补装置表明了实际应用的巨大潜力。

著录项

  • 来源
    《RSC Advances》 |2016年第3期|共6页
  • 作者单位

    Natl Cheng Kung Univ Dept Mat Sci &

    Engn Tainan 701 Taiwan;

    Natl Cheng Kung Univ Dept Mat Sci &

    Engn Tainan 701 Taiwan;

    Thintech Mat Technol Co LTD Tech Dept Kaohsiung Taiwan;

    Natl Univ Tainan Dept Mat Sci Tainan Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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