Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination

Xiao, Xun; Li, Wenhao; Fang, Yanjun; Liu, Ye; Shao, Yuchuan; Yang, Shuang; Zhao, Jingjing; Dai, Xuezeng; Zia, Rashid; Huang, Jinsong

doi:10.1038/s41467-020-16075-1

Title: Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination

Abstract

Abstract Grain boundaries have been established to impact charge transport, recombination and thus the power conversion efficiency of metal halide perovskite thin film solar cells. As a special category of grain boundaries, ferroelastic twin boundaries have been recently discovered to exist in both CH ₃ NH ₃ PbI ₃ thin films and single crystals. However, their impact on the carrier transport and recombination in perovskites remains unexplored. Here, using the scanning photocurrent microscopy, we find that twin boundaries have negligible influence on the carrier transport across them. Photoluminescence (PL) imaging and the spatial-resolved PL intensity and lifetime scanning confirm the electronically benign nature of the twin boundaries, in striking contrast to regular grain boundaries which block the carrier transport and behave as the non-radiative recombination centers. Finally, the twin-boundary areas are found still easier to degrade than grain interior.

Authors:

; Li, Wenhao; Fang, Yanjun;

; Shao, Yuchuan; Yang, Shuang;

;

; Zia, Rashid;

Publication Date:: Tue May 05 00:00:00 EDT 2020

Research Org.:: Alliance for Sustainable Energy, LLC (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1781856

Alternate Identifier(s):: OSTI ID: 1816510

Grant/Contract Number:: CHOISE; AC36-08GO28308

Resource Type:: Published Article

Journal Name:: Nature Communications

Additional Journal Information:: Journal Name: Nature Communications Journal Volume: 11 Journal Issue: 1; Journal ID: ISSN 2041-1723

Publisher:: Nature Publishing Group

Country of Publication:: United Kingdom

Language:: English

Subject:: 14 SOLAR ENERGY; 36 MATERIALS SCIENCE; 42 ENGINEERING

Citation Formats


                    Xiao, Xun, Li, Wenhao, Fang, Yanjun, Liu, Ye, Shao, Yuchuan, Yang, Shuang, Zhao, Jingjing, Dai, Xuezeng, Zia, Rashid, and Huang, Jinsong. Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination.  United Kingdom: N. p., 2020. 
Web.  doi:10.1038/s41467-020-16075-1.

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                    Xiao, Xun, Li, Wenhao, Fang, Yanjun, Liu, Ye, Shao, Yuchuan, Yang, Shuang, Zhao, Jingjing, Dai, Xuezeng, Zia, Rashid, & Huang, Jinsong. Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination.  United Kingdom.  https://doi.org/10.1038/s41467-020-16075-1

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                    Xiao, Xun, Li, Wenhao, Fang, Yanjun, Liu, Ye, Shao, Yuchuan, Yang, Shuang, Zhao, Jingjing, Dai, Xuezeng, Zia, Rashid, and Huang, Jinsong. Tue .  
"Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination".  United Kingdom.  https://doi.org/10.1038/s41467-020-16075-1.

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@article{osti_1781856,

  title        = {Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination},

  author       = {Xiao, Xun and Li, Wenhao and Fang, Yanjun and Liu, Ye and Shao, Yuchuan and Yang, Shuang and Zhao, Jingjing and Dai, Xuezeng and Zia, Rashid and Huang, Jinsong},

  abstractNote = {Abstract Grain boundaries have been established to impact charge transport, recombination and thus the power conversion efficiency of metal halide perovskite thin film solar cells. As a special category of grain boundaries, ferroelastic twin boundaries have been recently discovered to exist in both CH 3 NH 3 PbI 3 thin films and single crystals. However, their impact on the carrier transport and recombination in perovskites remains unexplored. Here, using the scanning photocurrent microscopy, we find that twin boundaries have negligible influence on the carrier transport across them. Photoluminescence (PL) imaging and the spatial-resolved PL intensity and lifetime scanning confirm the electronically benign nature of the twin boundaries, in striking contrast to regular grain boundaries which block the carrier transport and behave as the non-radiative recombination centers. Finally, the twin-boundary areas are found still easier to degrade than grain interior.},

  doi          = {10.1038/s41467-020-16075-1},

  journal      = {Nature Communications},

  number       = 1,

  volume       = 11,

  place        = {United Kingdom},

  year         = {Tue May 05 00:00:00 EDT 2020},

  month        = {Tue May 05 00:00:00 EDT 2020}

}

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Title: Benign ferroelastic twin boundaries in halide perovskites for charge carrier transport and recombination

Abstract

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Ferroelectricity-free lead halide perovskites
journal, January 2019

Abnormal crystal growth in CH ₃ NH ₃ PbI _3−x Cl _x using a multi-cycle solution coating process
journal, January 2015