Air-Stable Ultrabright Inverted Organic Light-Emitting Devices with Metal Ion-Chelated Polymer Injection Layer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Shihao Liu
  • Chunxiu Zang
  • Jiaming Zhang
  • Letian Zhang
  • Wenfa Xie

Detail(s)

Original languageEnglish
Article number14
Journal / PublicationNano-Micro Letters
Volume14
Issue number1
Online published6 Dec 2021
Publication statusPublished - Dec 2022

Link(s)

Abstract

Here, this work presents an air-stable ultrabright inverted organic light-emitting device (OLED) by using zinc ion-chelated polyethylenimine (PEI) as electron injection layer. The zinc chelation is demonstrated to increase the conductivity of the PEI by three orders of magnitude and passivate the polar amine groups. With these physicochemical properties, the inverted OLED shows a record-high external quantum efficiency of 10.0% at a high brightness of 45,610 cd m−2 and can deliver a maximum brightness of 121,865 cd m−2. Besides, the inverted OLED is also demonstrated to possess an excellent air stability (humidity, 35%) with a half-brightness operating time of 541 h @ 1000 cd m−2 without any protection nor encapsulation.[Figure not available: see fulltext.]

Research Area(s)

  • Air stability, Electron injection, Inverted organic light-emitting device, Metal ion chelation, Ultrabright

Citation Format(s)

Air-Stable Ultrabright Inverted Organic Light-Emitting Devices with Metal Ion-Chelated Polymer Injection Layer. / Liu, Shihao; Zang, Chunxiu; Zhang, Jiaming et al.

In: Nano-Micro Letters, Vol. 14, No. 1, 14, 12.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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