钙钛矿(结构)
材料科学
甲脒
制作
钙钛矿太阳能电池
金属
能量转换效率
薄膜
原子层沉积
太阳能电池
纳米技术
反应性(心理学)
化学工程
沉积(地质)
图层(电子)
光电子学
冶金
工程类
生物
病理
古生物学
医学
替代医学
沉积物
作者
Nikolai A. Belich,Andrey A. Petrov,Pavel O. Rudnev,Nikita M. Stepanov,Ivan Turkevych,Eugene A. Goodilin,Alexey B. Tarasov
标识
DOI:10.1021/acsami.0c02492
摘要
Solutions of methylammonium and formamidinium polyhalides (AX1+n, A = MA, FA, X = I, Br) in isopropanol are introduced as novel versatile precursors for the fabrication of APbX3 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 MAPbI3 and MA0.25FA0.75PbI2.75Br0.25 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.
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