Indirect Bandgap Emission of the Metal Halide Perovskite FAPbI3 at Low Temperatures

Cong Tao; Yingqiang Wei; Ju Zhang; Yu Cao; Saixue Wang; Lei Xu; Kaichuan Wen; Jingmin Wang; Zhiyuan Kuang; Xing Wang; Wei Huang; Qiming Peng; Jianpu Wang

doi:10.1021/acs.jpclett.3c00523

Indirect Bandgap Emission of the Metal Halide Perovskite FAPbI₃ at Low Temperatures

Cong Tao, Yingqiang Wei, Ju Zhang, Yu Cao, Saixue Wang, Lei Xu, Kaichuan Wen, Jingmin Wang, Zhiyuan Kuang, Xing Wang, Wei Huang, Qiming Peng, Jianpu Wang

SCHOOL OF FLEXIBLE ELECTRONICS(FUTURE TECHNOLOGIES)|INSTITUTE OF ADVANCED MATERIALS(IAM)

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

4 Scopus citations

Abstract

In this work, we provide a picture of the band structure of FAPbI₃ by investigating low-temperature spin-related photophysics. When the temperature is lower than 120 K, two photoluminescence peaks can be observed. The lifetime of the newly emerged low-energy emission is much longer than that of the original high-energy one by two orders of magnitude. We propose that Rashba effect-caused spin-dependent band splitting is the reason for the emergence of the low-energy emission and verify this using the magneto-optical measurements.

Original language	English
Pages (from-to)	3805-3810
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	14
Issue number	16
DOIs	https://doi.org/10.1021/acs.jpclett.3c00523
State	Published - 27 Apr 2023

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title = "Indirect Bandgap Emission of the Metal Halide Perovskite FAPbI3 at Low Temperatures",

abstract = "In this work, we provide a picture of the band structure of FAPbI3 by investigating low-temperature spin-related photophysics. When the temperature is lower than 120 K, two photoluminescence peaks can be observed. The lifetime of the newly emerged low-energy emission is much longer than that of the original high-energy one by two orders of magnitude. We propose that Rashba effect-caused spin-dependent band splitting is the reason for the emergence of the low-energy emission and verify this using the magneto-optical measurements.",

author = "Cong Tao and Yingqiang Wei and Ju Zhang and Yu Cao and Saixue Wang and Lei Xu and Kaichuan Wen and Jingmin Wang and Zhiyuan Kuang and Xing Wang and Wei Huang and Qiming Peng and Jianpu Wang",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

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day = "27",

doi = "10.1021/acs.jpclett.3c00523",

language = "英语",

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TY - JOUR

T1 - Indirect Bandgap Emission of the Metal Halide Perovskite FAPbI3 at Low Temperatures

AU - Tao, Cong

AU - Wei, Yingqiang

AU - Zhang, Ju

AU - Cao, Yu

AU - Wang, Saixue

AU - Xu, Lei

AU - Wen, Kaichuan

AU - Wang, Jingmin

AU - Kuang, Zhiyuan

AU - Wang, Xing

AU - Huang, Wei

AU - Peng, Qiming

AU - Wang, Jianpu

PY - 2023/4/27

Y1 - 2023/4/27

N2 - In this work, we provide a picture of the band structure of FAPbI3 by investigating low-temperature spin-related photophysics. When the temperature is lower than 120 K, two photoluminescence peaks can be observed. The lifetime of the newly emerged low-energy emission is much longer than that of the original high-energy one by two orders of magnitude. We propose that Rashba effect-caused spin-dependent band splitting is the reason for the emergence of the low-energy emission and verify this using the magneto-optical measurements.

AB - In this work, we provide a picture of the band structure of FAPbI3 by investigating low-temperature spin-related photophysics. When the temperature is lower than 120 K, two photoluminescence peaks can be observed. The lifetime of the newly emerged low-energy emission is much longer than that of the original high-energy one by two orders of magnitude. We propose that Rashba effect-caused spin-dependent band splitting is the reason for the emergence of the low-energy emission and verify this using the magneto-optical measurements.

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U2 - 10.1021/acs.jpclett.3c00523

DO - 10.1021/acs.jpclett.3c00523

M3 - 文章

C2 - 37053436

AN - SCOPUS:85153992540

SN - 1948-7185

VL - 14

SP - 3805

EP - 3810

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 16

ER -

Indirect Bandgap Emission of the Metal Halide Perovskite FAPbI₃ at Low Temperatures

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