Methylammonium lead iodide (MAPI3) material is promising for use in photovoltaic (PV) cells because of its efficient optoelectrical properties. However, the ambient air processed MAPI3 layer is unstable to ZnO film mainly during the annealing process. Herein, XRD results showed that the MAPI3 layer on the top of the ZnO photoelectrode is converted into lead iodide (PbI₂) because of the existence of hydroxide agents on the surface of the ZnO layer. For this reason, the MAPI₃ based PSCs showed poor power conversion efficiency (PCE) of 9.95 % with a hysteresis effect. In order to tackle this problem, we report here on a carbon nanotube (CNT)-incorporated MAPI₃ perovskite film made in ambient air and is employed as an effective absorber layer. Our results demonstrate that optimized PSC based on CNT additive shows a PCE up to 15 %.

甲基铵碘化铅（MAPI3）材料因其高效的光电性能而有望用于光伏（PV）电池。然而，主要在退火过程中，环境空气处理的MAPI3层对ZnO膜不稳定。在此，XRD结果表明，由于在ZnO层的表面上存在氢氧化物，因此ZnO光电极顶部的MAPI3层被转化为碘化铅（PbI ₂）。因此，基于MAPI ₃的PSC表现出较差的9.95％功率转换效率（PCE），并具有滞后效应。为了解决这个问题，我们在这里报告结合了碳纳米管（CNT）的MAPI ₃在环境空气中制成的钙钛矿薄膜，用作有效的吸收层。我们的结果表明，基于CNT添加剂的优化PSC显示PCE高达15％。