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首页> 外文期刊>ACS applied materials & interfaces >From Metallic Lead Films to Perovskite Solar Cells through Lead Conversion with Polyhalide Solutions
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From Metallic Lead Films to Perovskite Solar Cells through Lead Conversion with Polyhalide Solutions

机译：通过用铅转化与多晶硅溶液转化，从金属铅膜到钙钛矿太阳能电池

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摘要

Solutions of methylammonium and formamidinium polyhalides (AX(1+n), A = MA, FA, X = I, Br) in isopropanol are introduced as novel versatile precursors for the fabrication of APbX(3) hybrid perovskite thin films via oxidation of metallic Pb. The polyhalide solution with adjustable reactivity is distributed over a metallic Pb layer followed by iodine vapor postprocessing to tune the morphology and composition of the film using only the elements inherently present in the perovskite. This method is easily reproducible in any materials science laboratory with equipment commonly used for perovskite solar cell fabrication and resulted in power conversion efficiencies of 16.2 and 17.2% for planar solar cells using MAPbI(3) and MA(0.)(25)FA(0.)(75) PbI2.75Br0.25 perovskites, respectively, as a proof of concept. Implementation of metallic lead thin films as the single Pb-containing precursors reduces a number of in-lab handling hazards compared to classical PbI2 powder and solutions and provides a variety of scalable deposition options.
机译：异丙醇中甲基铵和甲脒甲酰胺（Ax（1 + N），A = MA，FA，X = I，Br）作为新的通用前体，用于通过金属氧化制备APBX（3）杂交钙钛矿薄膜的新型多功能前体PB。具有可调节反应性的聚卤化物溶液在金属Pb层上分布，然后在碘蒸气后，仅使用固有的钙钛矿中固有的元素来调整膜的形态和组成。该方法在任何材料科学实验室中容易再现，具有常用于钙钛矿太阳能电池制造的设备，并导致使用MAPBI（3）和MA（0.）（25）FA（25）（25）（25）（25））（ 0。）（75）PBI2.75BR0.25分别作为概念证明。与典型PBI2粉末和溶液相比，金属铅薄膜的实施减少了单一PB的前体，减少了许多实验室内处理危险，并提供了各种可扩展的沉积选项。

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