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

Associate Professorship of Theory of Functional Energy Materials

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

15 Scopus citations

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

Access to Document

10.1021/acs.jpclett.2c03337

Cite this

@article{1103aed6e75347a5b297f822b24e4bf1,

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",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",

year = "2023",

month = feb,

day = "9",

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

language = "English",

volume = "14",

pages = "1288--1293",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

number = "5",

}

TY - JOUR

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.

UR - http://www.scopus.com/inward/record.url?scp=85147215038&partnerID=8YFLogxK

U2 - 10.1021/acs.jpclett.2c03337

DO - 10.1021/acs.jpclett.2c03337

M3 - Article

C2 - 36722023

AN - SCOPUS:85147215038

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

Access to Document

Other files and links

Fingerprint

Cite this