Deciphering the effect of traps on electronic charge transport properties of methylammonium lead tribromide perovskite
Abstract
Halide perovskites have undergone remarkable developments as highly efficient optoelectronic materials for a variety of applications. Several studies indicated the critical role of defects on the performance of perovskite devices. However, the parameters of defects and their interplay with free charge carriers remain unclear. In this study, we explored the dynamics of free holes in methylammonium lead tribromide (MAPbBr 3 ) single crystals using the time-of-flight (ToF) current spectroscopy. By combining ToF spectroscopy and Monte Carlo simulation, three energy states were detected in the bandgap of MAPbBr 3 . In addition, we found the trapping and detrapping rates of free holes ranging from a few microseconds to hundreds of microseconds. Contrary to previous studies, we revealed a strong detrapping activity of traps. We showed that these traps substantially affect the transport properties of MAPbBr 3 , including mobility and mobility-lifetime product. Our results provide an insight on charge transport properties of perovskite semiconductors.
- Authors:
-
[1];
[1];
[1];
[1];
[3];
[2];
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, CZ-121 16 Prague 2, Czech Republic.
- Joint Institute for Advanced Materials, Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA.
- Oak Ridge National Laboratory, Materials Science and Technology Division, Oak Ridge, TN 37831, USA.
- 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). Materials Sciences & Engineering Division; US Department of Homeland Security (DHS); Grant Agency of the Czech Republic; Grant Agency of Charles University
- OSTI Identifier:
- 1659551
- Alternate Identifier(s):
- OSTI ID: 1661250
- Grant/Contract Number:
- AC05-00OR22725; 16DNARI00018-04-0; 1234119; P102/19/11920S
- Resource Type:
- Published Article
- Journal Name:
- Science Advances
- Additional Journal Information:
- Journal Name: Science Advances Journal Volume: 6 Journal Issue: 37; Journal ID: ISSN 2375-2548
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Musiienko, Artem, Pipek, Jindřich, Praus, Petr, Brynza, Mykola, Belas, Eduard, Dryzhakov, Bogdan, Du, Mao-Hua, Ahmadi, Mahshid, and Grill, Roman. Deciphering the effect of traps on electronic charge transport properties of methylammonium lead tribromide perovskite. United States: N. p., 2020.
Web. doi:10.1126/sciadv.abb6393.
Musiienko, Artem, Pipek, Jindřich, Praus, Petr, Brynza, Mykola, Belas, Eduard, Dryzhakov, Bogdan, Du, Mao-Hua, Ahmadi, Mahshid, & Grill, Roman. Deciphering the effect of traps on electronic charge transport properties of methylammonium lead tribromide perovskite. United States. https://doi.org/10.1126/sciadv.abb6393
Musiienko, Artem, Pipek, Jindřich, Praus, Petr, Brynza, Mykola, Belas, Eduard, Dryzhakov, Bogdan, Du, Mao-Hua, Ahmadi, Mahshid, and Grill, Roman. Fri .
"Deciphering the effect of traps on electronic charge transport properties of methylammonium lead tribromide perovskite". United States. https://doi.org/10.1126/sciadv.abb6393.
@article{osti_1659551,
title = {Deciphering the effect of traps on electronic charge transport properties of methylammonium lead tribromide perovskite},
author = {Musiienko, Artem and Pipek, Jindřich and Praus, Petr and Brynza, Mykola and Belas, Eduard and Dryzhakov, Bogdan and Du, Mao-Hua and Ahmadi, Mahshid and Grill, Roman},
abstractNote = {Halide perovskites have undergone remarkable developments as highly efficient optoelectronic materials for a variety of applications. Several studies indicated the critical role of defects on the performance of perovskite devices. However, the parameters of defects and their interplay with free charge carriers remain unclear. In this study, we explored the dynamics of free holes in methylammonium lead tribromide (MAPbBr 3 ) single crystals using the time-of-flight (ToF) current spectroscopy. By combining ToF spectroscopy and Monte Carlo simulation, three energy states were detected in the bandgap of MAPbBr 3 . In addition, we found the trapping and detrapping rates of free holes ranging from a few microseconds to hundreds of microseconds. Contrary to previous studies, we revealed a strong detrapping activity of traps. We showed that these traps substantially affect the transport properties of MAPbBr 3 , including mobility and mobility-lifetime product. Our results provide an insight on charge transport properties of perovskite semiconductors.},
doi = {10.1126/sciadv.abb6393},
journal = {Science Advances},
number = 37,
volume = 6,
place = {United States},
year = {Fri Sep 11 00:00:00 EDT 2020},
month = {Fri Sep 11 00:00:00 EDT 2020}
}
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