Texture of MAPbI3 Layers Assisted by Chloride on Flat TiO2 Substrates

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• 作者：Giovanna Pellegrino ; Silvia Colella ; Ioannis Deretzis ; Guglielmo G. Condorelli ; Emanuele Smecca ; Giuseppe Gigli ; Antonino La Magna ; Alessandra Alberti
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：August 27, 2015
• 年：2015
• 卷：119
• 期：34
• 页码：19808-19816
• 全文大小：542K
• ISSN：1932-7455

文摘

In this paper, we use X-ray diffraction, X-ray photoelectron spectroscopy, and atomic force microscopy to investigate the structural and morphological properties of methylammonium lead iodide (MAPbI₃) thin films deposited on flat TiO₂ substrates, as obtained with and without the use of chlorine precursors. We demonstrate that the presence of Cl precursors assists the growth of oriented MAPbI₃ domains along a specific growth direction. Such features are attributed to the proximity of the Cl species to the interface with the TiO₂ substrate.