Short-range investigation by means of variable-temperature neutron total scattering and pair distribution function analysis revealed that the local environment around the methylammonium (MA) cation in MAPbBr3 hybrid perovskite is maintained through the different phase transitions observed as a function of temperature. In addition, the orthorhombic distortion of the lattice is present at any temperature. Local structure around MA changes from static to configurationally averaged or dynamic with temperature but the local structure of the low-temperature orthorhombic phase is preserved.

Short-Range Order of Methylammonium and Persistence of Distortion at the Local Scale in MAPbBr3 Hybrid Perovskite

QUADRELLI, PAOLO;MALAVASI, LORENZO
2016-01-01

Abstract

Short-range investigation by means of variable-temperature neutron total scattering and pair distribution function analysis revealed that the local environment around the methylammonium (MA) cation in MAPbBr3 hybrid perovskite is maintained through the different phase transitions observed as a function of temperature. In addition, the orthorhombic distortion of the lattice is present at any temperature. Local structure around MA changes from static to configurationally averaged or dynamic with temperature but the local structure of the low-temperature orthorhombic phase is preserved.
2016
The Physical Chemistry/Chemical Physics category includes resources on photochemistry, solid state chemistry, kinetics, catalysis, quantum chemistry, surface chemistry, electro-chemistry, chemical thermodynamics, thermo-physics, colloids, fullerenes and zeolites. Resources dealing with (liquid) crystals and crystallography are also included in this category. This category also includes resources on atomic, molecular and chemical physics, which concerns the structure of atoms and molecules, atomic and molecular interactions with radiation, magnetic resonance and relaxation, Mossbauer effect, and atomic and molecular collision processes and interactions.
Esperti anonimi
Inglese
Internazionale
STAMPA
55
46
14320
14324
5
Hybrid perovskites; Methylammonium lead bromide; Neutron scattering; Pair distribution function; Photovoltaics; Catalysis; Chemistry (all)
http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-3773
4
info:eu-repo/semantics/article
262
Page, Katherine; Siewenie, Joan E.; Quadrelli, Paolo; Malavasi, Lorenzo
1 Contributo su Rivista::1.1 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/1162835
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