Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals

Guy Reuveni; Yael Diskin-Posner; Christian Gehrmann; Shravan Godse; Giannis G. Gkikas; Isaac Buchine; Sigalit Aharon; Roman Korobko; Constantinos C. Stoumpos; David A. Egger; Omer Yaffe

doi:10.1021/acs.jpclett.2c03337

Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals

Guy Reuveni, Yael Diskin-Posner, Christian Gehrmann, Shravan Godse, Giannis G. Gkikas, Isaac Buchine, Sigalit Aharon, Roman Korobko, Constantinos C. Stoumpos, David A. Egger, Omer Yaffe

Weizmann Institute of Science, Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

We show that formamidinium-based crystals are distinct from methylammonium-based halide perovskite crystals because their inorganic sublattice exhibits intrinsic local static disorder that coexists with a well-defined average crystal structure. Our study combines terahertz-range Raman scattering with single-crystal X-ray diffraction and first-principles calculations to probe the evolution of inorganic sublattice dynamics with temperature in the range of 10–300 K. The temperature evolution of the Raman spectra shows that low-temperature, local static disorder strongly affects the crystal structural dynamics and phase transitions at higher temperatures.

Original language	English
Pages (from-to)	1288-1293
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	14
Issue number	5
DOIs	https://doi.org/10.1021/acs.jpclett.2c03337
State	Published - 9 Feb 2023

All Science Journal Classification (ASJC) codes

General Materials Science
Physical and Theoretical Chemistry

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title = "Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals",

abstract = "We show that formamidinium-based crystals are distinct from methylammonium-based halide perovskite crystals because their inorganic sublattice exhibits intrinsic local static disorder that coexists with a well-defined average crystal structure. Our study combines terahertz-range Raman scattering with single-crystal X-ray diffraction and first-principles calculations to probe the evolution of inorganic sublattice dynamics with temperature in the range of 10–300 K. The temperature evolution of the Raman spectra shows that low-temperature, local static disorder strongly affects the crystal structural dynamics and phase transitions at higher temperatures.",

author = "Guy Reuveni and Yael Diskin-Posner and Christian Gehrmann and Shravan Godse and Gkikas, \{Giannis G.\} and Isaac Buchine and Sigalit Aharon and Roman Korobko and Stoumpos, \{Constantinos C.\} and Egger, \{David A.\} and Omer Yaffe",

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doi = "10.1021/acs.jpclett.2c03337",

language = "الإنجليزيّة",

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T1 - Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals

AU - Reuveni, Guy

AU - Diskin-Posner, Yael

AU - Gehrmann, Christian

AU - Godse, Shravan

AU - Gkikas, Giannis G.

AU - Buchine, Isaac

AU - Aharon, Sigalit

AU - Korobko, Roman

AU - Stoumpos, Constantinos C.

AU - Egger, David A.

AU - Yaffe, Omer

PY - 2023/2/9

Y1 - 2023/2/9

N2 - We show that formamidinium-based crystals are distinct from methylammonium-based halide perovskite crystals because their inorganic sublattice exhibits intrinsic local static disorder that coexists with a well-defined average crystal structure. Our study combines terahertz-range Raman scattering with single-crystal X-ray diffraction and first-principles calculations to probe the evolution of inorganic sublattice dynamics with temperature in the range of 10–300 K. The temperature evolution of the Raman spectra shows that low-temperature, local static disorder strongly affects the crystal structural dynamics and phase transitions at higher temperatures.

AB - We show that formamidinium-based crystals are distinct from methylammonium-based halide perovskite crystals because their inorganic sublattice exhibits intrinsic local static disorder that coexists with a well-defined average crystal structure. Our study combines terahertz-range Raman scattering with single-crystal X-ray diffraction and first-principles calculations to probe the evolution of inorganic sublattice dynamics with temperature in the range of 10–300 K. The temperature evolution of the Raman spectra shows that low-temperature, local static disorder strongly affects the crystal structural dynamics and phase transitions at higher temperatures.

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U2 - 10.1021/acs.jpclett.2c03337

DO - 10.1021/acs.jpclett.2c03337

M3 - مقالة

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SN - 1948-7185

VL - 14

SP - 1288

EP - 1293

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 5

ER -

Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals

Abstract

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