Perovskite Light Emitting Diodes Using Covalent Organic Polymers as Hole Injection Layers

被引：0

作者：

Wang Y.-F. ^{[1
]}

Xiang H.-Y. ^{[1
]}

Zhou Y.-H. ^{[1
]}

Li X.-L. ^{[2
]}

Wang R. ^{[1
]}

Xu B. ^{[1
]}

Liu J. ^{[3
]}

Li W.-J. ^{[1
]}

Xiang Z.-H. ^{[2
]}

Zeng H.-B. ^{[1
]}

机构：

[1] Key Laboratory of New Display Materials and Devices, Ministry of Industry and Information Technology, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing

[2] State Key Laboratory of Organic-Inorganic Composite Materials, School of Chemical Engineering, Beijing University of Chemical Technology, Beijing

[3] National Key Laboratory on Electromagnetic Environmental Effects and Electro-optical Engineering, Nanjing

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2022年 / 43卷 / 10期

基金：

中国国家自然科学基金;

关键词：

covalent organic polymers; hole injection layer; light-emitting diodes; perovskite quantum dots;

D O I：

10.37188/CJL.20220147

中图分类号：

学科分类号：

摘要：

Halide perovskite（ABX3） quantum dots and their light-emitting devices have the characteristics of high color purity， high luminous efficiency， and tunability in the visible light range. In recent years， they have shown great potential in lighting， display and other fields. However， the stability of perovskite quantum dot light-emitting diodes（PeQLEDs） is becoming the biggest obstacle to its commercial application. In addition to the stability of the perovskite light-emitting layer itself， the water-oxygen stability of the transport layer cannot be ignored. This work introduces a novel PeQLEDs that utilize an azole-based monomer-synthesized organic covalent polymer material（COP-N） instead of conventional PEDOT∶PSS as the hole injection layer material. We found that COP-N material has intrinsic water-oxygen stability， as well as a smaller hole injection barrier with PVK. These characteristics enable the COP-N-based PeQLED to achieve nearly twice the stability improvement while achieving better EQE than PEDO∶PSS. We believe that this organic covalent polymer material is expected to be a new type of hole injection material to achieve efficient and stable perovskite electroluminescent device， and promote the development of PeLEDs. © 2022 Chines Academy of Sciences. All rights reserved.

引用

页码：1574 / 1582

页数：8

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