Abstract Here we have coupled ferroelectric barium titanate (BaTiO3) with titanium dioxide (TiO2) nanotubes to improve performance of dye-sensitized solar cells with the aid of ferroelectric polarization. Measurements with the use of UV–vis spectroscopy reveal that BaTiO3 modified TiO2 nanotubes electrode shows more dye adsorption and greater fraction of light scattering. Moreover, the electron transport and recombination dynamics via electrochemical impedance spectroscopy and intensity modulated photocurrent/photovoltage spectroscopy measurements reveals that BaTiO3 modified TiO2 nanotubes cell has a faster electron transport, slower electron recombination and higher electron collection efficiency than original TiO2 nanotubes cell. The ferroelectric BaTiO3 modified TiO2 nanotubes cell exhibits a power conversion efficiency of 10.15%, which is higher than that of original TiO2 nanotubes cell (9.30%).

中文翻译：

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铁电钛酸钡诱导的染料敏化二氧化钛纳米管阵列太阳能电池具有优异的性能

摘要 在这里，我们将铁电钛酸钡 (BaTiO3) 与二氧化钛 (TiO2) 纳米管耦合，以借助铁电极化来提高染料敏化太阳能电池的性能。使用紫外-可见光谱的测量表明，BaTiO3 改性的 TiO2 纳米管电极显示出更多的染料吸附和更大的光散射部分。此外，通过电化学阻抗谱和强度调制光电流/光电压谱测量的电子传输和重组动力学表明，BaTiO3 改性的 TiO2 纳米管电池比原始 TiO2 纳米管电池具有更快的电子传输、更慢的电子重组和更高的电子收集效率。铁电 BaTiO3 修饰的 TiO2 纳米管电池表现出 10.15% 的功率转换效率，