A transient-electroluminescence study on perovskite light-emitting diodes

Mengmeng Xu; Qiming Peng; Wei Zou; Lianghui Gu; Lei Xu; Lu Cheng; Yarong He; Ming Yang; Nana Wang; Wei Huang; Jianpu Wang

doi:10.1063/1.5099277

A transient-electroluminescence study on perovskite light-emitting diodes

Mengmeng Xu, Qiming Peng, Wei Zou, Lianghui Gu, Lei Xu, Lu Cheng, Yarong He, Ming Yang, Nana Wang, Wei Huang, Jianpu Wang

柔性电子（未来科技）学院|先进材料研究院

科研成果: 期刊稿件 › 文章 › 同行评审

68 引用（Scopus）

摘要

We carried out transient-electroluminescence (Tr-EL) studies on multiple-quantum-well (MQW)-based perovskite light-emitting diodes (PeLEDs). The Tr-EL shows a short onset time (τ_d ∼0.1 μs) and rising time (τ_r ∼0.15 μs), demonstrating high carrier mobility in the MQW perovskites. The electron-mobility in the MQW perovskites was evaluated to be on the order of 10^-5 cm² V^-1 s^-1. When the pulses are turned off, the Tr-EL decays to zero in around 1 μs, indicating a low trap density in the MQW perovskites which was estimated to be on the order of 10¹⁵ cm^-3. Besides, the Tr-EL enables us to study the EL properties of PeLEDs at intense current densities, with the results showing that both the "Auger" recombination and "Joule" heating are the main causes of the efficiency droop at current densities of tens of ampere per centimeter square.

源语言	英语
文章编号	041102
期刊	Applied Physics Letters
卷	115
期	4
DOI	https://doi.org/10.1063/1.5099277
出版状态	已出版 - 22 7月 2019

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title = "A transient-electroluminescence study on perovskite light-emitting diodes",

abstract = "We carried out transient-electroluminescence (Tr-EL) studies on multiple-quantum-well (MQW)-based perovskite light-emitting diodes (PeLEDs). The Tr-EL shows a short onset time (τd ∼0.1 μs) and rising time (τr ∼0.15 μs), demonstrating high carrier mobility in the MQW perovskites. The electron-mobility in the MQW perovskites was evaluated to be on the order of 10-5 cm2 V-1 s-1. When the pulses are turned off, the Tr-EL decays to zero in around 1 μs, indicating a low trap density in the MQW perovskites which was estimated to be on the order of 1015 cm-3. Besides, the Tr-EL enables us to study the EL properties of PeLEDs at intense current densities, with the results showing that both the {"}Auger{"} recombination and {"}Joule{"} heating are the main causes of the efficiency droop at current densities of tens of ampere per centimeter square.",

author = "Mengmeng Xu and Qiming Peng and Wei Zou and Lianghui Gu and Lei Xu and Lu Cheng and Yarong He and Ming Yang and Nana Wang and Wei Huang and Jianpu Wang",

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T1 - A transient-electroluminescence study on perovskite light-emitting diodes

AU - Xu, Mengmeng

AU - Peng, Qiming

AU - Zou, Wei

AU - Gu, Lianghui

AU - Xu, Lei

AU - Cheng, Lu

AU - He, Yarong

AU - Yang, Ming

AU - Wang, Nana

AU - Huang, Wei

AU - Wang, Jianpu

PY - 2019/7/22

Y1 - 2019/7/22

N2 - We carried out transient-electroluminescence (Tr-EL) studies on multiple-quantum-well (MQW)-based perovskite light-emitting diodes (PeLEDs). The Tr-EL shows a short onset time (τd ∼0.1 μs) and rising time (τr ∼0.15 μs), demonstrating high carrier mobility in the MQW perovskites. The electron-mobility in the MQW perovskites was evaluated to be on the order of 10-5 cm2 V-1 s-1. When the pulses are turned off, the Tr-EL decays to zero in around 1 μs, indicating a low trap density in the MQW perovskites which was estimated to be on the order of 1015 cm-3. Besides, the Tr-EL enables us to study the EL properties of PeLEDs at intense current densities, with the results showing that both the "Auger" recombination and "Joule" heating are the main causes of the efficiency droop at current densities of tens of ampere per centimeter square.

AB - We carried out transient-electroluminescence (Tr-EL) studies on multiple-quantum-well (MQW)-based perovskite light-emitting diodes (PeLEDs). The Tr-EL shows a short onset time (τd ∼0.1 μs) and rising time (τr ∼0.15 μs), demonstrating high carrier mobility in the MQW perovskites. The electron-mobility in the MQW perovskites was evaluated to be on the order of 10-5 cm2 V-1 s-1. When the pulses are turned off, the Tr-EL decays to zero in around 1 μs, indicating a low trap density in the MQW perovskites which was estimated to be on the order of 1015 cm-3. Besides, the Tr-EL enables us to study the EL properties of PeLEDs at intense current densities, with the results showing that both the "Auger" recombination and "Joule" heating are the main causes of the efficiency droop at current densities of tens of ampere per centimeter square.

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SN - 0003-6951

VL - 115

JO - Applied Physics Letters

JF - Applied Physics Letters

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A transient-electroluminescence study on perovskite light-emitting diodes

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