Issue 11, 2023

Self-assembled molecules as selective contacts in CsPbBr3 nanocrystal light emitting diodes

Abstract

Metal halide perovskite nanocrystals have demonstrated their potential as light sources when forming part of efficient light emitting diodes (LEDs). However, operational stability and efficiency are compromised primarily because of unstable hole transport layers. In this work, we report the application of two carbazole-based self-assembled molecules (SAMs) as hole injecting materials in perovskite-based LEDs. Their structures differ in one phenyl ring in the bridge; however, the extra ring provides more stability to the devices, even surpassing the one obtained with the widely used polymer PTAA. In addition, due to the structural and electronic characteristics of the SAMs, the efficiency of the devices is also increased.

Graphical abstract: Self-assembled molecules as selective contacts in CsPbBr3 nanocrystal light emitting diodes

  • This article is part of the themed collection: #MyFirstJMCC

Supplementary files

Article information

Article type
Paper
Submitted
22 Aug 2022
Accepted
02 Feb 2023
First published
03 Feb 2023

J. Mater. Chem. C, 2023,11, 3788-3795

Self-assembled molecules as selective contacts in CsPbBr3 nanocrystal light emitting diodes

S. Kumari, J. G. Sánchez, M. Imran, E. Aktas, D. A. González, L. Manna, E. Martínez-Ferrero and E. Palomares, J. Mater. Chem. C, 2023, 11, 3788 DOI: 10.1039/D2TC03536G

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