CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance
To experimentally (dis)prove ferroelectric effects on the properties of lead-halide perovskites and of solar cells, based on them, we used second-harmonic-generation spectroscopy and the periodic temperature change (Chynoweth) technique to detect the polar nature of methylammonium lead bromide (MAPb...
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Online Access: | http://dx.doi.org/10.1063/1.4949760 |
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doaj-d98e0c47e39d4c7ebfb4d6cb56fee74e2020-11-25T00:00:50ZengAIP Publishing LLCAPL Materials2166-532X2016-05-0145051101051101-810.1063/1.4949760003605APMCH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performanceYevgeny Rakita0Elena Meirzadeh1Tatyana Bendikov2Vyacheslav Kalchenko3Igor Lubomirsky4Gary Hodes5David Ehre6David Cahen7Materials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelMaterials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelMaterials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelVeterinary Resources Department, Weizmann Institute of Science, Rehovot 7610001, IsraelMaterials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelMaterials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelMaterials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelMaterials and Interfaces, Weizmann Institute of Science, Rehovot 7610001, IsraelTo experimentally (dis)prove ferroelectric effects on the properties of lead-halide perovskites and of solar cells, based on them, we used second-harmonic-generation spectroscopy and the periodic temperature change (Chynoweth) technique to detect the polar nature of methylammonium lead bromide (MAPbBr3). We find that MAPbBr3 is probably centrosymmetric and definitely non-polar; thus, it cannot be ferroelectric. Whenever pyroelectric-like signals were detected, they could be shown to be due to trapped charges, likely at the interface between the metal electrode and the MAPbBr3 semiconductor. These results indicate that the ferroelectric effects do not affect steady-state performance of MAPbBr3 solar cells.http://dx.doi.org/10.1063/1.4949760 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yevgeny Rakita Elena Meirzadeh Tatyana Bendikov Vyacheslav Kalchenko Igor Lubomirsky Gary Hodes David Ehre David Cahen |
spellingShingle |
Yevgeny Rakita Elena Meirzadeh Tatyana Bendikov Vyacheslav Kalchenko Igor Lubomirsky Gary Hodes David Ehre David Cahen CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance APL Materials |
author_facet |
Yevgeny Rakita Elena Meirzadeh Tatyana Bendikov Vyacheslav Kalchenko Igor Lubomirsky Gary Hodes David Ehre David Cahen |
author_sort |
Yevgeny Rakita |
title |
CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance |
title_short |
CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance |
title_full |
CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance |
title_fullStr |
CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance |
title_full_unstemmed |
CH3NH3PbBr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance |
title_sort |
ch3nh3pbbr3 is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance |
publisher |
AIP Publishing LLC |
series |
APL Materials |
issn |
2166-532X |
publishDate |
2016-05-01 |
description |
To experimentally (dis)prove ferroelectric effects on the properties of lead-halide perovskites and of solar cells, based on them, we used second-harmonic-generation spectroscopy and the periodic temperature change (Chynoweth) technique to detect the polar nature of methylammonium lead bromide (MAPbBr3). We find that MAPbBr3 is probably centrosymmetric and definitely non-polar; thus, it cannot be ferroelectric. Whenever pyroelectric-like signals were detected, they could be shown to be due to trapped charges, likely at the interface between the metal electrode and the MAPbBr3 semiconductor. These results indicate that the ferroelectric effects do not affect steady-state performance of MAPbBr3 solar cells. |
url |
http://dx.doi.org/10.1063/1.4949760 |
work_keys_str_mv |
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