Silver nanowires (AgNWs) possess excellent mechanical strength, electrical conductivity, and superior flexibility, thus making them exceptional candidates for dopant nanometal. A photoanode modified with AgNWs-titanium dioxide (TiO2) composite film was prepared and used in flexible dye-sensitized solar cells (DSSCs). The AgNWs were synthesized by a stable polyol method. We employed the field-emission scanning electron microscope and an X-ray diffractometer to characterize the AgNWs. The measurement of the photovoltaic parameters of flexible DSSCs in the basic environment was conducted (air mass (AM) 1.5, 100 mW/cm2). Compared with the flexible DSSC based on pure TiO2, the flexible DSSCs based on AgNWs-TiO2 had a higher short-circuit current density and photovoltaic conversion efficiency, and the efficiency was increased by 37.40%. The impedance among the photoanode, dye, and electrolyte interface was identified by the electrochemical impedance spectroscopy. We also employed filters to better investigate the photovoltaic conversion efficiency at low incident light intensity. Furthermore, the flexible DSSCs devices were interfaced with an IoT system for the measurement of the stability of flexible DSSCs under long-term use to occur. We measured the flexible DSSCs continuously for 30 days. The photovoltaic conversion efficiency was lost only 10% in 20 days. This suggests that the flexible DSSCs have good mechanical stability, and the adhesion between the AgNWs-TiO2 photoanodes and the flexible substrate.

中文翻译：

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银纳米线修饰柔性染料敏太阳能电池及其在低照度物联网中的应用


银纳米线（AgNW）具有优异的机械强度、导电性和卓越的柔韧性，从而使其成为掺杂纳米金属的绝佳候选者。制备了AgNWs-二氧化钛（TiO2）复合膜修饰的光阳极，并将其用于柔性染料敏化太阳能电池（DSSC）。 AgNWs是通过稳定的多元醇方法合成的。我们采用场发射扫描电子显微镜和 X 射线衍射仪来表征 AgNW。在基础环境（空气质量（AM）1.5，100 mW/cm2）下测量了柔性DSSC的光伏参数。与基于纯TiO2的柔性DSSC相比，基于AgNWs-TiO2的柔性DSSC具有更高的短路电流密度和光伏转换效率，效率提高了37.40%。通过电化学阻抗谱确定光电阳极、染料和电解质界面之间的阻抗。我们还使用滤光片来更好地研究低入射光强度下的光伏转换效率。此外，柔性 DSSC 设备与物联网系统连接，用于测量柔性 DSSC 在长期使用下的稳定性。我们连续测量了灵活的 DSSC 30 天。 20天内光伏转换效率仅损失10%。这表明柔性 DSSC 具有良好的机械稳定性以及 AgNWs-TiO2 光阳极和柔性基板之间的粘附力。