Improving the Operational Lifetime of Metal-Halide Perovskite Light-Emitting Diodes with Dimension Control and Ligand Engineering

Perovskite light-emitting diodes (LEDs) have emerged as one of the most propitious candidates for next-generation lighting and displays, with the highest external quantum efficiency (EQE) of perovskite LEDs already surpassing the 20% milestone. However, the further development of perovskite LEDs pri...

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Published inACS nano Vol. 18; no. 12; pp. 8557 - 8570
Main Authors Zhang, Qianpeng, Zhang, Daquan, Cao, Bryan, Poddar, Swapnadeep, Mo, Xiaoliang, Fan, Zhiyong
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 26.03.2024
Subjects
lifetime
LED
perovskite
ligand engineering
dimension control
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Summary:Perovskite light-emitting diodes (LEDs) have emerged as one of the most propitious candidates for next-generation lighting and displays, with the highest external quantum efficiency (EQE) of perovskite LEDs already surpassing the 20% milestone. However, the further development of perovskite LEDs primarily relies on addressing operational instability issues. This Perspective examines some of the key factors that impact the lifetime of perovskite LED devices and some representative reports on recent advancements aimed at improving the lifetime. Our analysis underscores the significance of “nano” strategies in achieving long-term stable perovskite LEDs. Significant efforts must be directed toward proper device encapsulation, perovskite material passivation, interfacial treatment to address environment-induced material instability, bias-induced phase separation, and ion migration issues.
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ISSN:1936-0851
1936-086X
DOI:10.1021/acsnano.3c13136