Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite

Tianji Ou; Xinjun Ma; Huacai Yan; Wenshu Shen; Hao Liu; Yonghao Han; Xizhe Liu; Cailong Liu; Yanzhang Ma; Chunxiao Gao

doi:10.1063/1.5063394

Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite

Tianji Ou, Xinjun Ma, Huacai Yan, Wenshu Shen, Hao Liu, Yonghao Han, Xizhe Liu, Cailong Liu, Yanzhang Ma, Chunxiao Gao

Mechanical Engineering

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

11 Scopus citations

Abstract

Further efficiency boost of organic-inorganic perovskite solar cells is hampered by limited knowledge on ion migration, inductive loops, and the relationship between structures and properties in organometal halide perovskites. In this work, in situ alternating current impedance spectroscopy measurements on CH(NH ₂ ) ₂ PbBr ₃ (FAPbBr ₃ ) have been carried out under high pressure up to 4.8 GPa. The inductive loop has been discovered at low frequencies and can be tuned dramatically by applying pressure, which is attributed to large FA ion migration in FAPbBr ₃ . Two discontinuous changes are observed in both ionic and electronic resistances around phase transition pressure. The pressure dependent photoresponse of FAPbBr ₃ has also been studied by in situ photocurrent measurements under high pressure up to 3.8 GPa. It indicates that the photocurrent of FAPbBr ₃ can be enhanced remarkably at 1.3 GPa and the largest photocurrent value in FAPbBr ₃ is nearly 10 times larger than that in CH ₃ NH ₃ PbBr ₃ and about 3 times larger than that in CH ₃ NH ₃ PbI ₃ .

Original language	English
Article number	262105
Journal	Applied Physics Letters
Volume	113
Issue number	26
DOIs	https://doi.org/10.1063/1.5063394
State	Published - Dec 24 2018

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title = "Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite",

abstract = " Further efficiency boost of organic-inorganic perovskite solar cells is hampered by limited knowledge on ion migration, inductive loops, and the relationship between structures and properties in organometal halide perovskites. In this work, in situ alternating current impedance spectroscopy measurements on CH(NH 2 ) 2 PbBr 3 (FAPbBr 3 ) have been carried out under high pressure up to 4.8 GPa. The inductive loop has been discovered at low frequencies and can be tuned dramatically by applying pressure, which is attributed to large FA ion migration in FAPbBr 3 . Two discontinuous changes are observed in both ionic and electronic resistances around phase transition pressure. The pressure dependent photoresponse of FAPbBr 3 has also been studied by in situ photocurrent measurements under high pressure up to 3.8 GPa. It indicates that the photocurrent of FAPbBr 3 can be enhanced remarkably at 1.3 GPa and the largest photocurrent value in FAPbBr 3 is nearly 10 times larger than that in CH 3 NH 3 PbBr 3 and about 3 times larger than that in CH 3 NH 3 PbI 3 .",

author = "Tianji Ou and Xinjun Ma and Huacai Yan and Wenshu Shen and Hao Liu and Yonghao Han and Xizhe Liu and Cailong Liu and Yanzhang Ma and Chunxiao Gao",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 11674404, 11774126, 11874174, and 11404133) and the Graduate Innovation Fund of Jilin University (No. 2017113). Publisher Copyright: {\textcopyright} 2018 Author(s).",

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doi = "10.1063/1.5063394",

language = "English",

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TY - JOUR

T1 - Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite

AU - Ou, Tianji

AU - Ma, Xinjun

AU - Yan, Huacai

AU - Shen, Wenshu

AU - Liu, Hao

AU - Han, Yonghao

AU - Liu, Xizhe

AU - Liu, Cailong

AU - Ma, Yanzhang

AU - Gao, Chunxiao

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant Nos. 11674404, 11774126, 11874174, and 11404133) and the Graduate Innovation Fund of Jilin University (No. 2017113). Publisher Copyright: © 2018 Author(s).

PY - 2018/12/24

Y1 - 2018/12/24

N2 - Further efficiency boost of organic-inorganic perovskite solar cells is hampered by limited knowledge on ion migration, inductive loops, and the relationship between structures and properties in organometal halide perovskites. In this work, in situ alternating current impedance spectroscopy measurements on CH(NH 2 ) 2 PbBr 3 (FAPbBr 3 ) have been carried out under high pressure up to 4.8 GPa. The inductive loop has been discovered at low frequencies and can be tuned dramatically by applying pressure, which is attributed to large FA ion migration in FAPbBr 3 . Two discontinuous changes are observed in both ionic and electronic resistances around phase transition pressure. The pressure dependent photoresponse of FAPbBr 3 has also been studied by in situ photocurrent measurements under high pressure up to 3.8 GPa. It indicates that the photocurrent of FAPbBr 3 can be enhanced remarkably at 1.3 GPa and the largest photocurrent value in FAPbBr 3 is nearly 10 times larger than that in CH 3 NH 3 PbBr 3 and about 3 times larger than that in CH 3 NH 3 PbI 3 .

AB - Further efficiency boost of organic-inorganic perovskite solar cells is hampered by limited knowledge on ion migration, inductive loops, and the relationship between structures and properties in organometal halide perovskites. In this work, in situ alternating current impedance spectroscopy measurements on CH(NH 2 ) 2 PbBr 3 (FAPbBr 3 ) have been carried out under high pressure up to 4.8 GPa. The inductive loop has been discovered at low frequencies and can be tuned dramatically by applying pressure, which is attributed to large FA ion migration in FAPbBr 3 . Two discontinuous changes are observed in both ionic and electronic resistances around phase transition pressure. The pressure dependent photoresponse of FAPbBr 3 has also been studied by in situ photocurrent measurements under high pressure up to 3.8 GPa. It indicates that the photocurrent of FAPbBr 3 can be enhanced remarkably at 1.3 GPa and the largest photocurrent value in FAPbBr 3 is nearly 10 times larger than that in CH 3 NH 3 PbBr 3 and about 3 times larger than that in CH 3 NH 3 PbI 3 .

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DO - 10.1063/1.5063394

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VL - 113

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite

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