Abstract This study focuses on incorporating single wall carbon nanotubes (CNTs) in both electron conducting porous Titanium dioxide (TiO2) and the hole conducting Poly(3-hexylthiophene) (P3HT) layers in order to enhance the performance of perovskite solar cells. The CNT was incorporated at TiO2/CH3NH3PbIxCl3-x interface by dip coating TiO2 electrodes with CNT solution prior to deposition of CH3NH3PbIxCl3-x and by blending with P3HT, respectively. Raman spectra and Atomic Force Microscopic (AFM) images confirmed the presence of CNT in TiO2 electrodes and in P3HT, respectively. Optimized devices with the CNT show overall power conversion efficiencies (PCE) over 14%, under 100 mW/cm2 illumination with Air Mass 1.5 filter, which is 50% higher than that of the control device which is not having CNT. The enhancement is predominantly due to increase in short circuit current density (JSC) and fill factor, which resulted from surface passivation at the interface by CNT.

中文翻译：

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单壁碳纳米管包含二氧化钛和聚（3-己基噻吩）作为钙钛矿太阳能电池的电子和空穴传输材料

摘要 本研究的重点是在电子导电多孔二氧化钛 (TiO2) 和空穴导电聚 (3-己基噻吩) (P3HT) 层中加入单壁碳纳米管 (CNT)，以提高钙钛矿太阳能电池的性能。通过在沉积 CH3NH3PbIxCl3-x 之前用 CNT 溶液浸涂 TiO2 电极和通过分别与 P3HT 混合，将 CNT 结合到 TiO2/CH3NH3PbIxCl3-x 界面。拉曼光谱和原子力显微镜 (AFM) 图像分别证实了 TiO2 电极和 P3HT 中存在 CNT。具有 CNT 的优化设备在使用空气质量 1.5 过滤器的 100 mW/cm2 照明下显示出超过 14% 的总功率转换效率 (PCE)，比没有 CNT 的控制设备高 50%。