Multiple-quantum-well perovskite for hole-transport-layer-free light-emitting diodes

Peifeng Li; Jie Wang; Hong Chen; Hao Zhang; Cheng Li; Wenjie Xu; Renzhi Li; Lin Zhu; Nana Wang; Jianpu Wang

doi:10.1016/j.cclet.2021.06.084

Multiple-quantum-well perovskite for hole-transport-layer-free light-emitting diodes

Peifeng Li, Jie Wang, Hong Chen, Hao Zhang, Cheng Li, Wenjie Xu, Renzhi Li, Lin Zhu, Nana Wang, Jianpu Wang

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

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

11 Scopus citations

Abstract

We demonstrate hole-transport-layer-free light-emitting diodes (LEDs) based on solution-processed multiple-quantum-well (MQW) perovskite. The MQW perovskite can self-assemble to a unique structure of vertically graded distribution with two-dimensional layered perovskite covered by three-dimensional-like perovskite at top, which can naturally form a barrier of electron transporting to the anode interface, thereby enhancing the charge capture efficiency. This leads to hole-transport-layer-free MQW perovskite LEDs reaching an external quantum efficiency (EQE) of 9.0% with emission peak at 528 nm, which is over 6 times of LEDs based on three-dimensional perovskite with the same device structure, representing the record EQE of hole-transport-layer-free perovskite LED.

Original language	English
Pages (from-to)	1017-1020
Number of pages	4
Journal	Chinese Chemical Letters
Volume	33
Issue number	2
DOIs	https://doi.org/10.1016/j.cclet.2021.06.084
State	Published - Feb 2022

Keywords

Green emission
Hole-transport-layer-free device
Multiple-quantum-well perovskite
Perovskite light-emitting diodes

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10.1016/j.cclet.2021.06.084

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title = "Multiple-quantum-well perovskite for hole-transport-layer-free light-emitting diodes",

abstract = "We demonstrate hole-transport-layer-free light-emitting diodes (LEDs) based on solution-processed multiple-quantum-well (MQW) perovskite. The MQW perovskite can self-assemble to a unique structure of vertically graded distribution with two-dimensional layered perovskite covered by three-dimensional-like perovskite at top, which can naturally form a barrier of electron transporting to the anode interface, thereby enhancing the charge capture efficiency. This leads to hole-transport-layer-free MQW perovskite LEDs reaching an external quantum efficiency (EQE) of 9.0% with emission peak at 528 nm, which is over 6 times of LEDs based on three-dimensional perovskite with the same device structure, representing the record EQE of hole-transport-layer-free perovskite LED.",

keywords = "Green emission, Hole-transport-layer-free device, Multiple-quantum-well perovskite, Perovskite light-emitting diodes",

author = "Peifeng Li and Jie Wang and Hong Chen and Hao Zhang and Cheng Li and Wenjie Xu and Renzhi Li and Lin Zhu and Nana Wang and Jianpu Wang",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2022",

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doi = "10.1016/j.cclet.2021.06.084",

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volume = "33",

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T1 - Multiple-quantum-well perovskite for hole-transport-layer-free light-emitting diodes

AU - Li, Peifeng

AU - Wang, Jie

AU - Chen, Hong

AU - Zhang, Hao

AU - Li, Cheng

AU - Xu, Wenjie

AU - Li, Renzhi

AU - Zhu, Lin

AU - Wang, Nana

AU - Wang, Jianpu

PY - 2022/2

Y1 - 2022/2

N2 - We demonstrate hole-transport-layer-free light-emitting diodes (LEDs) based on solution-processed multiple-quantum-well (MQW) perovskite. The MQW perovskite can self-assemble to a unique structure of vertically graded distribution with two-dimensional layered perovskite covered by three-dimensional-like perovskite at top, which can naturally form a barrier of electron transporting to the anode interface, thereby enhancing the charge capture efficiency. This leads to hole-transport-layer-free MQW perovskite LEDs reaching an external quantum efficiency (EQE) of 9.0% with emission peak at 528 nm, which is over 6 times of LEDs based on three-dimensional perovskite with the same device structure, representing the record EQE of hole-transport-layer-free perovskite LED.

AB - We demonstrate hole-transport-layer-free light-emitting diodes (LEDs) based on solution-processed multiple-quantum-well (MQW) perovskite. The MQW perovskite can self-assemble to a unique structure of vertically graded distribution with two-dimensional layered perovskite covered by three-dimensional-like perovskite at top, which can naturally form a barrier of electron transporting to the anode interface, thereby enhancing the charge capture efficiency. This leads to hole-transport-layer-free MQW perovskite LEDs reaching an external quantum efficiency (EQE) of 9.0% with emission peak at 528 nm, which is over 6 times of LEDs based on three-dimensional perovskite with the same device structure, representing the record EQE of hole-transport-layer-free perovskite LED.

KW - Green emission

KW - Hole-transport-layer-free device

KW - Multiple-quantum-well perovskite

KW - Perovskite light-emitting diodes

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U2 - 10.1016/j.cclet.2021.06.084

DO - 10.1016/j.cclet.2021.06.084

M3 - 文章

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SN - 1001-8417

VL - 33

SP - 1017

EP - 1020

JO - Chinese Chemical Letters

JF - Chinese Chemical Letters

IS - 2

ER -

Multiple-quantum-well perovskite for hole-transport-layer-free light-emitting diodes

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Keywords

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