Direct Observation of Photoinduced Ion Migration in Lead Halide Perovskites
Abstract
Abstract Unique optoelectronic, electronic, and sensing properties of hybrid organic–inorganic perovskites (HOIPs) are underpinned by the complex interactions between electronic and ionic states. Here, the photoinduced field ion migration in HOIPs is directly observed. Using newly developed local probe time‐resolved techniques, more significant CH 3 NH 3 + migration than I − /Br − migration in HOIPs is unveiled. It is found that light illumination only induces CH 3 NH 3 + migration but not I − /Br − migration. By directly observing temporal changes in bias‐induced and photoinduced ion migration in device conditions, it is revealed that light illumination suppresses the bias‐induced ion redistribution in the lateral device. These findings, being a necessary compensation of previous understandings of ion migration in HOIPs based on simulations and static and/or indirect measurements, offer advanced insights into the distinct light effects on the migration of organic cation and halides in HOIPs, which are expected to be helpful for improving the performance and the long‐term stability of HOIPs optoelectronics.
- Authors:
-
[1];
[2];
[2];
[2];
[2]
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Univ. of Tennessee, Knoxville, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)
- OSTI Identifier:
- 1777795
- Alternate Identifier(s):
- OSTI ID: 1804218
- Grant/Contract Number:
- AC05-00OR22725; FA9550-15-1-0064, FA2386-15-1-4104; CBET-1438181
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 8; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; lead halide perovskite; ion migration; cation migration; light illumination
Citation Formats
Liu, Yongtao, Ievlev, Anton V., Borodinov, Nikolay, Lorenz, Matthias, Xiao, Kai, Ahmadi, Mahshid, Hu, Bin, Kalinin, Sergei V., and Ovchinnikova, Olga S. Direct Observation of Photoinduced Ion Migration in Lead Halide Perovskites. United States: N. p., 2020.
Web. doi:10.1002/adfm.202008777.
Liu, Yongtao, Ievlev, Anton V., Borodinov, Nikolay, Lorenz, Matthias, Xiao, Kai, Ahmadi, Mahshid, Hu, Bin, Kalinin, Sergei V., & Ovchinnikova, Olga S. Direct Observation of Photoinduced Ion Migration in Lead Halide Perovskites. United States. https://doi.org/10.1002/adfm.202008777
Liu, Yongtao, Ievlev, Anton V., Borodinov, Nikolay, Lorenz, Matthias, Xiao, Kai, Ahmadi, Mahshid, Hu, Bin, Kalinin, Sergei V., and Ovchinnikova, Olga S. Wed .
"Direct Observation of Photoinduced Ion Migration in Lead Halide Perovskites". United States. https://doi.org/10.1002/adfm.202008777. https://www.osti.gov/servlets/purl/1777795.
@article{osti_1777795,
title = {Direct Observation of Photoinduced Ion Migration in Lead Halide Perovskites},
author = {Liu, Yongtao and Ievlev, Anton V. and Borodinov, Nikolay and Lorenz, Matthias and Xiao, Kai and Ahmadi, Mahshid and Hu, Bin and Kalinin, Sergei V. and Ovchinnikova, Olga S.},
abstractNote = {Abstract Unique optoelectronic, electronic, and sensing properties of hybrid organic–inorganic perovskites (HOIPs) are underpinned by the complex interactions between electronic and ionic states. Here, the photoinduced field ion migration in HOIPs is directly observed. Using newly developed local probe time‐resolved techniques, more significant CH 3 NH 3 + migration than I − /Br − migration in HOIPs is unveiled. It is found that light illumination only induces CH 3 NH 3 + migration but not I − /Br − migration. By directly observing temporal changes in bias‐induced and photoinduced ion migration in device conditions, it is revealed that light illumination suppresses the bias‐induced ion redistribution in the lateral device. These findings, being a necessary compensation of previous understandings of ion migration in HOIPs based on simulations and static and/or indirect measurements, offer advanced insights into the distinct light effects on the migration of organic cation and halides in HOIPs, which are expected to be helpful for improving the performance and the long‐term stability of HOIPs optoelectronics.},
doi = {10.1002/adfm.202008777},
journal = {Advanced Functional Materials},
number = 8,
volume = 31,
place = {United States},
year = {Wed Nov 25 00:00:00 EST 2020},
month = {Wed Nov 25 00:00:00 EST 2020}
}
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