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Preparation of Methylammonium Tin Iodide (CH 3 NH 3 SnI 3 ) Perovskite Thin Films via Flash Evaporation

Mortan, Claudiu and Hellmann, Tim and Clemens, Oliver and Mayer, Thomas and Jaegermann, Wolfram (2019):
Preparation of Methylammonium Tin Iodide (CH 3 NH 3 SnI 3 ) Perovskite Thin Films via Flash Evaporation.
In: physica status solidi (a), 216 (18), p. 1900209. Wiley‐VCH, ISSN 1862-6300,
DOI: 10.1002/pssa.201900209,
[Article]

Abstract

Using the one‐step flash evaporation technique, it is possible to deposit a film of methylammonium tin iodide (MASI, CH3NH3SnI3) from the solid perovskite powder that is prepared by a mechanochemical synthesis, without the use of any solvents. The source material and the film are characterized by X‐ray photoelectron spectroscopy (XPS) and X‐ray diffraction (XRD). The XPS measurements show that the MASI film is stoichiometric and is a p‐type material with the Fermi level of 0.4 eV above the valence band maximum (VBM) and a bandgap of 1.3 eV. The XRD pattern of the film reveals the formation of MASI perovskite of high purity, crystallizing with pseudo‐cubic symmetry, having the lattice parameters a  ≈ c  = 6.239(8) Å.

Item Type: Article
Erschienen: 2019
Creators: Mortan, Claudiu and Hellmann, Tim and Clemens, Oliver and Mayer, Thomas and Jaegermann, Wolfram
Title: Preparation of Methylammonium Tin Iodide (CH 3 NH 3 SnI 3 ) Perovskite Thin Films via Flash Evaporation
Language: English
Abstract:

Using the one‐step flash evaporation technique, it is possible to deposit a film of methylammonium tin iodide (MASI, CH3NH3SnI3) from the solid perovskite powder that is prepared by a mechanochemical synthesis, without the use of any solvents. The source material and the film are characterized by X‐ray photoelectron spectroscopy (XPS) and X‐ray diffraction (XRD). The XPS measurements show that the MASI film is stoichiometric and is a p‐type material with the Fermi level of 0.4 eV above the valence band maximum (VBM) and a bandgap of 1.3 eV. The XRD pattern of the film reveals the formation of MASI perovskite of high purity, crystallizing with pseudo‐cubic symmetry, having the lattice parameters a  ≈ c  = 6.239(8) Å.

Journal or Publication Title: physica status solidi (a)
Journal volume: 216
Number: 18
Publisher: Wiley‐VCH
Uncontrolled Keywords: flash evaporation, methylammonium tin iodide, perovskite solar cells
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Materialdesign durch Synthese
11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 04 Jun 2020 05:50
DOI: 10.1002/pssa.201900209
Official URL: https://doi.org/10.1002/pssa.201900209
Projects: The authors would like to thank for the financial support of the Darmstadt Graduate School of Excellence Energy Science and Engineering, a DFG project, GSC 1070 and from the BMBF within the PeroSol project 03SF0483A. i, O.C. acknowledges support from the German Research Foundation (DFG) within CL551/2‐1.
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