skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Lattice dynamics and the nature of structural transitions in organolead halide perovskites

Journal Article · · Physical Review B

Organolead halide perovskites are a family of hybrid organic-inorganic compounds whose remarkable optoelectronic properties have been under intensive scrutiny in recent years. Here we use inelastic x-ray scattering to study low-energy lattice excitations in single crystals of methylammonium lead iodide and bromide perovskites. Our findings confirm the displacive nature of the cubic-to-tetragonal phase transition, which is further shown, using neutron and x-ray diffraction, to be close to a tricritical point. Lastly, we detect quasistatic symmetry-breaking nanodomains persisting well into the high-temperature cubic phase, possibly stabilized by local defects. These findings reveal key structural properties of these materials, and also bear important implications for carrier dynamics across an extended temperature range relevant for photovoltaic applications.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Natural Sciences and Engineering Research Council of Canada (NSERC)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1340303
Journal Information:
Physical Review B, Vol. 94, Issue 9; ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

References (34)

On the Phase Transition in Lead Titanate journal July 1951
Neutron-scattering study on phase transitions of CsPb Cl 3 journal May 1974
X-ray scattering study of the R-point instability in SrTiO 3 journal July 1986
Determination of the critical exponents at the R-point instability in KMnF 3 journal August 1987
Metal-halide perovskites for photovoltaic and light-emitting devices journal May 2015
Chemical Management for Colorful, Efficient, and Stable Inorganic–Organic Hybrid Nanostructured Solar Cells journal March 2013
First-Principles Modeling of Mixed Halide Organometal Perovskites for Photovoltaic Applications journal July 2013
Structural, optical, and electronic studies of wide-bandgap lead halide perovskites journal January 2015
Photovoltaic behaviour of lead methylammonium triiodide perovskite solar cells down to 80 K journal January 2015
Interplay of Orientational Order and Electronic Structure in Methylammonium Lead Iodide: Implications for Solar Cell Operation journal November 2014
Dynamic disorder in methylammoniumtrihalogenoplumbates (II) observed by millimeter‐wave spectroscopy journal December 1987
Six-reflection meV-monochromator for synchrotron radiation journal May 2011
New developments in fabrication of high-energy-resolution analyzers for inelastic X-ray spectroscopy journal March 2011
Facile route to freestanding CH3NH3PbI3 crystals using inverse solubility journal June 2015
High-quality bulk hybrid perovskite single crystals within minutes by inverse temperature crystallization journal July 2015
The Raman Spectrum of the CH 3 NH 3 PbI 3 Hybrid Perovskite: Interplay of Theory and Experiment journal December 2013
Lattice dynamics and vibrational spectra of the orthorhombic, tetragonal, and cubic phases of methylammonium lead iodide journal October 2015
Dynamic disorder, phonon lifetimes, and the assignment of modes to the vibrational spectra of methylammonium lead halide perovskites journal January 2016
Vibrational Properties of the Organic–Inorganic Halide Perovskite CH 3 NH 3 PbI 3 from Theory and Experiment: Factor Group Analysis, First-Principles Calculations, and Low-Temperature Infrared Spectra journal November 2015
On the universality of inversion layer mobility in Si MOSFET's: Part II-effects of surface orientation journal January 1994
Structural Phase- and Degradation-Dependent Thermal Conductivity of CH 3 NH 3 PbI 3 Perovskite Thin Films journal March 2016
Low electron-polar optical phonon scattering as a fundamental aspect of carrier mobility in methylammonium lead halide CH 3 NH 3 PbI 3 perovskites journal January 2016
Electron–phonon coupling in hybrid lead halide perovskites journal May 2016
Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals journal January 2015
Integration of neutron time-of-flight single-crystal Bragg peaks in reciprocal space journal May 2014
Structural Study on Cubic–Tetragonal Transition of CH 3 NH 3 PbI 3 journal July 2002
Interaction of Elastic Strain with the Structural Transition of Strontium Titanate journal May 1970
The Landau Theory of Phase Transitions book August 1987
Calorimetric and IR spectroscopic studies of phase transitions in methylammonium trihalogenoplumbates (II)† journal January 1990
Complete structure and cation orientation in the perovskite photovoltaic methylammonium lead iodide between 100 and 352 K journal January 2015
Dynamic Fluctuations and Static Speckle in Critical X-Ray Scattering from SrTiO 3 journal February 2007
Central peak and narrow component in x-ray scattering measurements near the displacive phase transition in SrTiO 3 journal September 2008
Materials Processing Routes to Trap-Free Halide Perovskites journal October 2014
Halide-Dependent Electronic Structure of Organolead Perovskite Materials journal June 2015

Cited By (9)

Dielectric Response: Answer to Many Questions in the Methylammonium Lead Halide Solar Cell Absorbers journal May 2017
Structural Evolution During Perovskite Crystal Formation and Degradation: In Situ and Operando X‐Ray Diffraction Studies journal November 2019
Polar rotor scattering as atomic-level origin of low mobility and thermal conductivity of perovskite CH3NH3PbI3 journal June 2017
Hot carrier cooling mechanisms in halide perovskites journal November 2017
The effect of ionic composition on acoustic phonon speeds in hybrid perovskites from Brillouin spectroscopy and density functional theory journal January 2018
Assessment of dynamic structural instabilities across 24 cubic inorganic halide perovskites journal January 2020
Phonon anharmonicity, lifetimes, and thermal transport in CH 3 NH 3 PbI 3 from many-body perturbation theory journal December 2016
Lifetime-shortened acoustic phonons and static order at the Brillouin zone boundary in the organic-inorganic perovskite CH 3 NH 3 PbCl 3 journal December 2018
The Effect of Ionic Composition on Acoustic Phonon Speeds in Hybrid Perovskites from Brillouin Spectroscopy and Density Functional Theory text January 2018

Similar Records

Lattice dynamics and the nature of structural transitions in organolead halide perovskites
Journal Article · Fri Sep 09 00:00:00 EDT 2016 · Physical Review B · OSTI ID:1340303

Persistent dopants and phase segregation in organolead mixed-halide perovskites
Journal Article · Mon Jul 25 00:00:00 EDT 2016 · Chemistry of Materials · OSTI ID:1340303

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Journal Article · Fri Sep 08 00:00:00 EDT 2017 · Journal of Visualized Experiments · OSTI ID:1340303