Dielectric and ferroic properties of metal halide perovskites
File(s)
Published version
Author(s)
Wilson, Jacob N
Frost, Jarvist M
Wallace, Suzanne K
Walsh, Aron
Type
Journal Article
Abstract
Halide perovskite semiconductors and solar cells respond to electric fields in a way that varies across time and length scales. We discuss the microscopic processes that give rise to the macroscopic polarization of these materials, ranging from the optical and vibrational response to the transport of ions and electrons. The strong frequency dependence of the dielectric permittivity can be understood by separating the static dielectric constant into its constituents, including the orientational polarization due to rotating dipoles, which connects theory with experimental observations. The controversial issue of ferroelectricity is addressed, where we highlight recent progress in materials and domain characterization but emphasize the challenge associated with isolating spontaneous lattice polarization from other processes such as charged defect formation and transport. We conclude that CH3NH3PbI3 exhibits many features characteristic of a ferroelastic electret, where a spontaneous lattice strain is coupled to long-lived metastable polarization states.
Date Issued
2019-01-28
Date Acceptance
2018-12-04
Citation
APL Materials, 2019, 7 (1)
ISSN
2166-532X
Publisher
AIP Publishing LLC
Journal / Book Title
APL Materials
Volume
7
Issue
1
Copyright Statement
© 2019 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/1.5079633
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000457407500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Physical Sciences
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Science & Technology - Other Topics
Materials Science
Physics
METHYLAMMONIUM LEAD IODIDE
ORGANIC-INORGANIC PEROVSKITES
FERROELECTRIC DOMAINS
OPTICAL-PROPERTIES
SOLAR-CELLS
PHASE-TRANSITIONS
HIGH-PERFORMANCE
HIGH-EFFICIENCY
THIN-FILMS
POLARIZATION
Publication Status
Published
Article Number
ARTN 010901
Date Publish Online
2019-01-28