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Infrared Spectroscopic Study of Vibrational Modes in Methylammonium Lead Halide Perovskites

The organic cation and its interplay with the inorganic lattice underlie the exceptional optoelectronic properties of organo-metallic halide perovskites. Herein we report high-quality infrared spectroscopic measurements of methylammonium lead halide perovskite (CH3NH3Pb(I/Br/Cl)3) films and single c...

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Bibliographic Details
Main Authors: Glaser, Tobias (Author) , Sendner, Michael (Author) , Kowalsky, Wolfgang (Author) , Pucci, Annemarie (Author) , Lovrinčić, Robert (Author)
Format: Article (Journal)
Language:English
Published: July 9, 2015
In: The journal of physical chemistry letters
Year: 2015, Volume: 6, Issue: 15, Pages: 2913-2918
ISSN:1948-7185
DOI:10.1021/acs.jpclett.5b01309
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/acs.jpclett.5b01309
Verlag, lizenzpflichtig, Volltext: https://pubs.acs.org/doi/10.1021/acs.jpclett.5b01309
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Author Notes:Tobias Glaser, Christian Müller, Michael Sendner, Christian Krekeler, Octavi E. Semonin, Trevor D. Hull, Omer Yaffe, Jonathan S. Owen, Wolfgang Kowalsky, Annemarie Pucci, Robert Lovrinčić
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Summary:The organic cation and its interplay with the inorganic lattice underlie the exceptional optoelectronic properties of organo-metallic halide perovskites. Herein we report high-quality infrared spectroscopic measurements of methylammonium lead halide perovskite (CH3NH3Pb(I/Br/Cl)3) films and single crystals at room temperature, from which the dielectric function in the investigated spectral range is derived. Comparison with electronic structure calculations in vacuum of the free methylammonium cation allows for a detailed peak assignment. We analyze the shifts of the vibrational peak positions between the different halides and infer the extent of interaction between organic moiety and the surrounding inorganic cage. The positions of the NH3+ stretching vibrations point to significant hydrogen bonding between the methylammonium and the halides for all three perovskites.
Item Description:Gesehen am 01.07.2020
Physical Description:Online Resource
ISSN:1948-7185
DOI:10.1021/acs.jpclett.5b01309

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