Twin domains modulate light-matter interactions in metal halide perovskites

Yongtao Liu; Mingxing Li; Miaosheng Wang; Liam Collins; Anton V. Ievlev; Stephen Jesse; Kai Xiao; Bin Hu; Alex Belianinov; Olga S. Ovchinnikova

doi:10.1063/1.5127866

Twin domains modulate light-matter interactions in metal halide perovskites

Yongtao Liu, Mingxing Li, Miaosheng Wang, Liam Collins, Anton V. Ievlev, Stephen Jesse, Kai Xiao, Bin Hu, Alex Belianinov, Olga S. Ovchinnikova

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Despite the extensive insights gained in how the microstructure impacts the device performance of metal halide perovskites (MHPs), little is known about the effect of the ferroelastic twin domains on the optoelectronic properties of MHPs. In this work, the effect of the ferroelastic twin domains on the photoluminescence (PL) behavior of CH₃NH₃PbI₃ is investigated by correlating measurements from multiple microscopies. PL spectra and the confocal PL lifetime maps reveal no difference in wavelength of emitted light and decay dynamics between the neighboring domains, whereas PL intensity is different. We propose that the PL intensity variation is induced by the difference in light-matter interactions between neighboring domains. These results suggest that the effect of ferroelastic twin domains on the intrinsic PL behavior is negligible. We expect that this work will stimulate researchers to further explore the impact of twin domains on the photophysical properties of MHPs.

Original language	English
Article number	011106
Journal	APL Materials
Volume	8
Issue number	1
DOIs	https://doi.org/10.1063/1.5127866
State	Published - Jan 1 2020

Funding

This research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. The research was supported by the Center for Nanophase Materials Sciences at Oak Ridge National Laboratory (Y.L., L.C., A.V.I., S.J., K.X., A.B., and O.S.O.). The research was partially sponsored by the Air Force Office of Scientific Research (AFOSR) under Grant No. FA 9550-15-1-0064, AOARD (Grant No. FA2386-15-1-4104), and the National Science Foundation (Grant No. CBET-1438181) (B.H.). This research used resources of the Center for Functional Nanomaterials, which is a U.S. DOE Office of Science Facility at Brookhaven National Laboratory under Contract No. DE-SC0012704. The authors declare no competing financial interests.

Funders	Funder number
Center for Nanophase Materials Sciences
DOE Office of Science Facility at Brookhaven National Laboratory
National Science Foundation
Air Force Office of Scientific Research	FA2386-15-1-4104, FA 9550-15-1-0064
Oak Ridge National Laboratory

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abstract = "Despite the extensive insights gained in how the microstructure impacts the device performance of metal halide perovskites (MHPs), little is known about the effect of the ferroelastic twin domains on the optoelectronic properties of MHPs. In this work, the effect of the ferroelastic twin domains on the photoluminescence (PL) behavior of CH3NH3PbI3 is investigated by correlating measurements from multiple microscopies. PL spectra and the confocal PL lifetime maps reveal no difference in wavelength of emitted light and decay dynamics between the neighboring domains, whereas PL intensity is different. We propose that the PL intensity variation is induced by the difference in light-matter interactions between neighboring domains. These results suggest that the effect of ferroelastic twin domains on the intrinsic PL behavior is negligible. We expect that this work will stimulate researchers to further explore the impact of twin domains on the photophysical properties of MHPs.",

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AU - Liu, Yongtao

AU - Li, Mingxing

AU - Wang, Miaosheng

AU - Collins, Liam

AU - Ievlev, Anton V.

AU - Jesse, Stephen

AU - Xiao, Kai

AU - Hu, Bin

AU - Belianinov, Alex

AU - Ovchinnikova, Olga S.

PY - 2020/1/1

Y1 - 2020/1/1

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AB - Despite the extensive insights gained in how the microstructure impacts the device performance of metal halide perovskites (MHPs), little is known about the effect of the ferroelastic twin domains on the optoelectronic properties of MHPs. In this work, the effect of the ferroelastic twin domains on the photoluminescence (PL) behavior of CH3NH3PbI3 is investigated by correlating measurements from multiple microscopies. PL spectra and the confocal PL lifetime maps reveal no difference in wavelength of emitted light and decay dynamics between the neighboring domains, whereas PL intensity is different. We propose that the PL intensity variation is induced by the difference in light-matter interactions between neighboring domains. These results suggest that the effect of ferroelastic twin domains on the intrinsic PL behavior is negligible. We expect that this work will stimulate researchers to further explore the impact of twin domains on the photophysical properties of MHPs.

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Twin domains modulate light-matter interactions in metal halide perovskites

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