Issue 37, 2022

Understanding and minimizing non-radiative recombination losses in perovskite light-emitting diodes

Abstract

Light-emitting diodes (LEDs) based on metal halide perovskites have shown great promise for next-generation display technology as they offer high color purity, satisfy Rec. 2020, and have low-cost solution processability. Moreover, metal halide perovskites exhibit extraordinary optoelectronic properties such as high photoluminescence quantum yields (PLQYs), feasible spectral tunability, narrow emission and high charge-carrier mobility, which has led to a rapid increase in the external quantum efficiencies (EQEs) of up to 28% for perovskite light-emitting diodes (PeLEDs) over the past few years. Nevertheless, further increase in efficiency is impeded in these state-of-the-art devices due to the presence of non-radiative recombination losses, which also limits their operational stability. In this review, we provide a fundamental analysis of the predominant pathways that induce non-radiative recombination losses in PeLEDs, followed by a discussion on what and how reliable characterization techniques could be used to evaluate such losses. We also summarize and critically assess the most recent advances in suppressing non-radiative recombination in PeLEDs. Finally, we discuss the remaining challenges and outline future directions that aim to minimize non-radiative recombination losses and boost the efficiency of PeLEDs towards their radiative limit.

Graphical abstract: Understanding and minimizing non-radiative recombination losses in perovskite light-emitting diodes

Article information

Article type
Review Article
Submitted
06 Maijs 2022
Accepted
13 Jūl. 2022
First published
14 Jūl. 2022

J. Mater. Chem. C, 2022,10, 13590-13610

Understanding and minimizing non-radiative recombination losses in perovskite light-emitting diodes

H. Cheng, Y. Feng, Y. Fu, Y. Zheng, Y. Shao and Y. Bai, J. Mater. Chem. C, 2022, 10, 13590 DOI: 10.1039/D2TC01869A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements