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Title: Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites

Abstract

Abstract Organometallic halide perovskites (OMHPs) have attracted broad attention as prospective materials for optoelectronic applications. Among the many anomalous properties of these materials, of special interest are the ferroelectric properties including both classical and relaxor‐like components, as a potential origin of slow dynamics, field enhancement, and anomalous mobilities. Here, ferroelectric properties of the three representative OMHPs are explored, including FAPb x Sn 1– x I 3 ( x = 0, x = 0.85) and FA 0.85 MA 0.15 PbI 3 using band excitation piezoresponse force microscopy and contact mode Kelvin probe force microscopy, providing insight into long‐ and short‐range dipole and charge dynamics in these materials and probing ferroelectric density of states. Furthermore, second‐harmonic generation in thin films of OMHPs is observed, providing a direct information on the noncentrosymmetric polarization in such materials. Overall, the data provide strong evidence for the presence of ferroelectric domains in these systems; however, the domain dynamics is suppressed by fast ion dynamics. These materials hence present the limit of ferroelectric materials with spontaneous polarization dynamically screened by ionic and electronic carriers.

Authors:
 [1];  [2]; ORCiD logo [2];  [1]; ORCiD logo [2];  [3]; ORCiD logo [2]; ORCiD logo [2];  [1]
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  1. Univ. of Tennessee, Knoxville, TN (United States). Joint Inst. of Advanced Materials, Dept. of Materials Science and Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Air Force Office of Scientific Research (AFOSR)
OSTI Identifier:
1422541
Alternate Identifier(s):
OSTI ID: 1417713
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 30; Journal Issue: 11; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ferroelectric; organometallic halide perovskites; piezoresponse force; microscopy; polarization; second-harmonic generation

Citation Formats

Ahmadi, Mahshid, Collins, Liam, Puretzky, Alexander, Zhang, Jia, Keum, Jong Kahk, Lu, Wei, Ivanov, Ilia, Kalinin, Sergei V., and Hu, Bin. Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites. United States: N. p., 2018. Web. doi:10.1002/adma.201705298.
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Ahmadi, Mahshid, Collins, Liam, Puretzky, Alexander, Zhang, Jia, Keum, Jong Kahk, Lu, Wei, Ivanov, Ilia, Kalinin, Sergei V., & Hu, Bin. Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites. United States. https://doi.org/10.1002/adma.201705298
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Ahmadi, Mahshid, Collins, Liam, Puretzky, Alexander, Zhang, Jia, Keum, Jong Kahk, Lu, Wei, Ivanov, Ilia, Kalinin, Sergei V., and Hu, Bin. Mon . "Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites". United States. https://doi.org/10.1002/adma.201705298. https://www.osti.gov/servlets/purl/1422541.
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@article{osti_1422541,
title = {Exploring Anomalous Polarization Dynamics in Organometallic Halide Perovskites},
author = {Ahmadi, Mahshid and Collins, Liam and Puretzky, Alexander and Zhang, Jia and Keum, Jong Kahk and Lu, Wei and Ivanov, Ilia and Kalinin, Sergei V. and Hu, Bin},
abstractNote = {Abstract Organometallic halide perovskites (OMHPs) have attracted broad attention as prospective materials for optoelectronic applications. Among the many anomalous properties of these materials, of special interest are the ferroelectric properties including both classical and relaxor‐like components, as a potential origin of slow dynamics, field enhancement, and anomalous mobilities. Here, ferroelectric properties of the three representative OMHPs are explored, including FAPb x Sn 1– x I 3 ( x = 0, x = 0.85) and FA 0.85 MA 0.15 PbI 3 using band excitation piezoresponse force microscopy and contact mode Kelvin probe force microscopy, providing insight into long‐ and short‐range dipole and charge dynamics in these materials and probing ferroelectric density of states. Furthermore, second‐harmonic generation in thin films of OMHPs is observed, providing a direct information on the noncentrosymmetric polarization in such materials. Overall, the data provide strong evidence for the presence of ferroelectric domains in these systems; however, the domain dynamics is suppressed by fast ion dynamics. These materials hence present the limit of ferroelectric materials with spontaneous polarization dynamically screened by ionic and electronic carriers.},
doi = {10.1002/adma.201705298},
journal = {Advanced Materials},
number = 11,
volume = 30,
place = {United States},
year = {Mon Jan 22 00:00:00 EST 2018},
month = {Mon Jan 22 00:00:00 EST 2018}
}
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    journal, July 2019

    • Sharma, Pankaj; Xiang, Fei-Xiang; Shao, Ding-Fu
    • Science Advances, Vol. 5, Issue 7
    • DOI: 10.1126/sciadv.aax5080

    Machine Learning Augmented Discovery of Chalcogenide Double Perovskites for Photovoltaics
    journal, November 2019

    • Agiorgousis, Michael L.; Sun*, Yi‐Yang; Choe, Duk‐Hyun
    • Advanced Theory and Simulations, Vol. 3, Issue 1
    • DOI: 10.1002/adts.201900200

    Light- and bias-induced structural variations in metal halide perovskites
    journal, January 2019

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