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首页> 外文期刊>Nanotechnology, IEEE Transactions on >Electrochemical Analysis of Photoelectrochromic Device Combined Dye-Sensitized Solar Cell
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Electrochemical Analysis of Photoelectrochromic Device Combined Dye-Sensitized Solar Cell

机译：光电致变色器件结合染料敏化太阳能电池的电化学分析

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摘要

In this study, the photoelectrochromic device (PECD) is combination of dye-sensitized solar cell with electrochromic device (ECD) on flexible ITO/PET substrate. First, the presintering titanium dioxide was fabricated on flexible ITO/PET substrate by a screen-printing technique. Second, the tungsten trioxide (WO3) thin film was fabricated by radio frequency sputtering as electrochromic layer with different working pressures, which obtain optimal parameters in order to improve property and applied to PECD. The transmittance variation (ΔT%), optical density change (ΔOD), and coloration efficiency of optimal WO3 thin film which applied to flexible ECD and PECD were investigated. In addition, the electron transfer property of flexible PECD was analyzed by electrochemical impedance spectroscopy under dark and illumination. The Nyquist diagram indicates that the difference between dark and illumination is a diffusion phenomenon, and the charge transfer resistance between electrode and electrolyte can be observed. According to Bode plot, the phase value of flexible PECD is decreased under illumination. It indicates that the mobility of charge increases at the interface which is between titanium dioxide (TiO2 ) layer and electrolyte. Through Nyquist diagram and Bode plot, we can assert that the performance of the WO3 thin film which sputtered at 30 mtorr and applied to flexible ECD and PECD could obtain the optimal characteristics.
机译：在这项研究中，光电致变色器件（PECD）是染料敏化太阳能电池与柔性ITO / PET基板上的电致变色器件（ECD）的组合。首先，通过丝网印刷技术在柔性ITO / PET基板上制备预烧结二氧化钛。其次，通过射频溅射制备具有不同工作压力的三氧化钨（WO 3 ）薄膜作为电致变色层，获得了改善性能的最佳参数，并应用于PECD。研究了应用于柔性ECD和PECD的最佳WO 3 薄膜的透射率变化（ΔT％），光密度变化（ΔOD）和着色效率。另外，通过在黑暗和光照下的电化学阻抗谱分析了柔性PECD的电子转移性能。奈奎斯特图表明，暗和照度之间的差异是扩散现象，可以观察到电极和电解质之间的电荷转移电阻。根据波特图，柔性PECD的相位值在光照下会减小。这表明电荷的迁移率在二氧化钛（TiO 2 ）层与电解质之间的界面处增加。通过Nyquist图和Bode图，我们可以断言在30mtorr溅射并应用于柔性ECD和PECD的WO 3 薄膜的性能可以获得最佳性能。

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