Abstract Here we present a highly flexible and large-area CuS transparent conductive film (TCF) fabricated by colloidal crackle pattern as a counter electrode (CE) for flexible dye sensitized solar cell (DSSC). This rectangular CuS TCF can be fabricated on arbitrary flexible substrates at low temperature and exhibits superior mechanical robustness in bending cycling measurement. The transmittance and conductivity can be accurately controlled by controlling the sizes and shapes of the crackle patterns, ~ 90% transmittance can be achieved when the sheet resistances (Rs) are ~ 60 Ω sq−1. Moreover, such CuS TCF has strong receivable ability of pH (1−13) and temperature changes (0–100 °C). In the application of DSSC as CE, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analyses of the CuS networks exhibit a comparable electrocatalytic behavior with the platinum (Pt) networks on polyethylene terephthalate (PET), yielding a power conversion efficiency (PCE) of 4.54% for DSSC based on CuS networks as CE and retaining > 90% PCE after 500 bending cycles. Such CuS TCF with high transparency, flexibility, conductivity and electrochemical catalytic ability shows great potentials in other wearable, light-weight electrochemical cells.

中文翻译：

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用于氧化铟锡和无铂柔性染料敏化太阳能电池的矩形 CuS 网络薄膜的可控和大规模制造

摘要 在这里，我们提出了一种由胶体裂纹图案制造的高柔性和大面积 CuS 透明导电膜 (TCF) 作为柔性染料敏化太阳能电池 (DSSC) 的对电极 (CE)。这种矩形 CuS TCF 可以在低温下在任意柔性基板上制造，并且在弯曲循环测量中表现出优异的机械强度。通过控制裂纹图案的大小和形状可以精确控制透射率和导电率，当薄层电阻 (Rs) 为 ~ 60 Ω sq-1 时，可以实现 ~ 90% 的透射率。此外，这种CuS TCF具有很强的pH（1-13）和温度变化（0-100°C）的接收能力。在 DSSC 作为 CE 的应用中，CuS 网络的循环伏安法 (CV) 和电化学阻抗谱 (EIS) 分析显示出与聚对苯二甲酸乙二醇酯 (PET) 上的铂 (Pt) 网络相当的电催化行为，DSSC 的功率转换效率 (PCE) 为 4.54%基于 CuS 网络作为 CE 并在 500 次弯曲循环后保留 > 90% PCE。这种具有高透明度、柔韧性、导电性和电化学催化能力的 CuS TCF 在其他可穿戴、轻质电化学电池中显示出巨大的潜力。