Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes

Huixin Li; Siliang Hu; Hongyue Wang; Xiuhai Zhang; Yu Tong; Heng Qi; Pengfei Guo; Guanguan Zhao; Jialiang Gao; Peng Liu; Jianyang Zang; Hongxing Hao; Taihong Liu; Hongtao Bian; Youqian Zhang; Yang Wei; Yangyang Guo; Lei Zhang; Yu Fang; Hongqiang Wang

doi:10.1021/acsami.2c19979

Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes

Huixin Li, Siliang Hu, Hongyue Wang, Xiuhai Zhang, Yu Tong, Heng Qi, Pengfei Guo, Guanguan Zhao, Jialiang Gao, Peng Liu, Jianyang Zang, Hongxing Hao, Taihong Liu, Hongtao Bian, Youqian Zhang, Yang Wei, Yangyang Guo, Lei Zhang, Yu Fang, Hongqiang Wang

School of Materials Sience and Engineering

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

24 Scopus citations

Abstract

Pure-bromide quasi-2D perovskite (PBQ-2DP) promises high-performance light-emitting diodes (LEDs), while a challenge remains on control over its n-phase distribution for bright true-blue emission. Present work addresses the challenge through exploring the passivation molecule of amino acid with reinforced binding energy, which generates narrow n-phase distribution preferentially at n = 3 with true blue emission at 478 nm. Consequently, a peak external quantum efficiency of 5.52% and a record brightness of 512 cd m^-2 are achieved on the PBQ-2DP-based true blue PeLED, these both values located among the top in the records of similar devices. We further reveal that the electron-phonon coupling results in the red-shifted emission in the PBQ-2DP film, suggesting that the view of n-phase distribution dominated true-blue emission in PBQ-2DP needs to be revisited, pointing out a guideline of electron-phonon coupling suppression to relieve the strait of realizing true blue or even deep blue emission in the PBQ-2DP film.

Original language	English
Pages (from-to)	9574-9583
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	15
Issue number	7
DOIs	https://doi.org/10.1021/acsami.2c19979
State	Published - 22 Feb 2023

Keywords

bidentate anchoring
blue LEDs
electron−phonon coupling
n-phase distribution
quasi-2D CsPbBr perovskite

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10.1021/acsami.2c19979

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Li, H., Hu, S., Wang, H., Zhang, X., Tong, Y., Qi, H., Guo, P., Zhao, G., Gao, J., Liu, P., Zang, J., Hao, H., Liu, T., Bian, H., Zhang, Y., Wei, Y., Guo, Y., Zhang, L., Fang, Y., & Wang, H. (2023). Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes. ACS Applied Materials and Interfaces, 15(7), 9574-9583. https://doi.org/10.1021/acsami.2c19979

@article{1ec3a695103c4f4684f20f7d182ed359,

title = "Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes",

abstract = "Pure-bromide quasi-2D perovskite (PBQ-2DP) promises high-performance light-emitting diodes (LEDs), while a challenge remains on control over its n-phase distribution for bright true-blue emission. Present work addresses the challenge through exploring the passivation molecule of amino acid with reinforced binding energy, which generates narrow n-phase distribution preferentially at n = 3 with true blue emission at 478 nm. Consequently, a peak external quantum efficiency of 5.52% and a record brightness of 512 cd m-2 are achieved on the PBQ-2DP-based true blue PeLED, these both values located among the top in the records of similar devices. We further reveal that the electron-phonon coupling results in the red-shifted emission in the PBQ-2DP film, suggesting that the view of n-phase distribution dominated true-blue emission in PBQ-2DP needs to be revisited, pointing out a guideline of electron-phonon coupling suppression to relieve the strait of realizing true blue or even deep blue emission in the PBQ-2DP film.",

keywords = "bidentate anchoring, blue LEDs, electron−phonon coupling, n-phase distribution, quasi-2D CsPbBr perovskite",

author = "Huixin Li and Siliang Hu and Hongyue Wang and Xiuhai Zhang and Yu Tong and Heng Qi and Pengfei Guo and Guanguan Zhao and Jialiang Gao and Peng Liu and Jianyang Zang and Hongxing Hao and Taihong Liu and Hongtao Bian and Youqian Zhang and Yang Wei and Yangyang Guo and Lei Zhang and Yu Fang and Hongqiang Wang",

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

year = "2023",

month = feb,

day = "22",

doi = "10.1021/acsami.2c19979",

language = "英语",

volume = "15",

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Li, H, Hu, S, Wang, H, Zhang, X, Tong, Y, Qi, H, Guo, P, Zhao, G, Gao, J, Liu, P, Zang, J, Hao, H, Liu, T, Bian, H, Zhang, Y, Wei, Y, Guo, Y, Zhang, L, Fang, Y & Wang, H 2023, 'Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes', ACS Applied Materials and Interfaces, vol. 15, no. 7, pp. 9574-9583. https://doi.org/10.1021/acsami.2c19979

TY - JOUR

T1 - Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes

AU - Li, Huixin

AU - Hu, Siliang

AU - Wang, Hongyue

AU - Zhang, Xiuhai

AU - Tong, Yu

AU - Qi, Heng

AU - Guo, Pengfei

AU - Zhao, Guanguan

AU - Gao, Jialiang

AU - Liu, Peng

AU - Zang, Jianyang

AU - Hao, Hongxing

AU - Liu, Taihong

AU - Bian, Hongtao

AU - Zhang, Youqian

AU - Wei, Yang

AU - Guo, Yangyang

AU - Zhang, Lei

AU - Fang, Yu

AU - Wang, Hongqiang

PY - 2023/2/22

Y1 - 2023/2/22

N2 - Pure-bromide quasi-2D perovskite (PBQ-2DP) promises high-performance light-emitting diodes (LEDs), while a challenge remains on control over its n-phase distribution for bright true-blue emission. Present work addresses the challenge through exploring the passivation molecule of amino acid with reinforced binding energy, which generates narrow n-phase distribution preferentially at n = 3 with true blue emission at 478 nm. Consequently, a peak external quantum efficiency of 5.52% and a record brightness of 512 cd m-2 are achieved on the PBQ-2DP-based true blue PeLED, these both values located among the top in the records of similar devices. We further reveal that the electron-phonon coupling results in the red-shifted emission in the PBQ-2DP film, suggesting that the view of n-phase distribution dominated true-blue emission in PBQ-2DP needs to be revisited, pointing out a guideline of electron-phonon coupling suppression to relieve the strait of realizing true blue or even deep blue emission in the PBQ-2DP film.

AB - Pure-bromide quasi-2D perovskite (PBQ-2DP) promises high-performance light-emitting diodes (LEDs), while a challenge remains on control over its n-phase distribution for bright true-blue emission. Present work addresses the challenge through exploring the passivation molecule of amino acid with reinforced binding energy, which generates narrow n-phase distribution preferentially at n = 3 with true blue emission at 478 nm. Consequently, a peak external quantum efficiency of 5.52% and a record brightness of 512 cd m-2 are achieved on the PBQ-2DP-based true blue PeLED, these both values located among the top in the records of similar devices. We further reveal that the electron-phonon coupling results in the red-shifted emission in the PBQ-2DP film, suggesting that the view of n-phase distribution dominated true-blue emission in PBQ-2DP needs to be revisited, pointing out a guideline of electron-phonon coupling suppression to relieve the strait of realizing true blue or even deep blue emission in the PBQ-2DP film.

KW - bidentate anchoring

KW - blue LEDs

KW - electron−phonon coupling

KW - n-phase distribution

KW - quasi-2D CsPbBr perovskite

UR - http://www.scopus.com/inward/record.url?scp=85147823475&partnerID=8YFLogxK

U2 - 10.1021/acsami.2c19979

DO - 10.1021/acsami.2c19979

M3 - 文章

AN - SCOPUS:85147823475

SN - 1944-8244

VL - 15

SP - 9574

EP - 9583

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 7

ER -

Control of n-Phase Distribution in Quasi Two-Dimensional Perovskite for Efficient Blue Light-Emitting Diodes

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Keywords

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