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Preparation and in-system study of SnCl2 precursor layers: towards vacuum-based synthesis of Pb-free perovskites

机译:SnCl 2 前驱体层的制备和系统内研究:致力于基于真空的无铅钙钛矿的合成

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The chemical structure and topography evolution of vapor-deposited SnCl2 thin-films on Mo-coated glass substrates was studied via a combination of electron spectroscopies and scanning electron microscopy. For this purpose, a thickness series of SnCl2 thin-films was prepared using different evaporation times, revealing significant changes in the chemical environment of Sn and Cl along the layer profile and layer topography. The presence of O in the Mo-coated substrates can lead to oxidation in the SnCl2 film layers. The findings in this work show the effect that substrate conditions can exert on the chemical (and electronic) properties of the deposited material layers and that need to be taken into account for device optimization.
机译: 结合电子光谱学研究了气相沉积SnCl 2 薄膜在Mo涂层玻璃基板上的化学结构和形貌演化和扫描电子显微镜。为此,使用不同的蒸发时间制备了一系列厚度的SnCl 2 薄膜,揭示了Sn和Cl的化学环境沿层轮廓的显着变化。层地形。 Mo涂覆的基材中O的存在会导致SnCl 2 薄膜层中的氧化。这项工作中的发现表明,衬底条件可能会影响沉积材料层的化学(和电子)特性,因此需要对器件的优化加以考虑。

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