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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 29, 2024
Accepted July 9, 2024

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Recent Progress on Blue Quantum Dot Light-Emitting Diodes from Materials to Device Engineering

Youngwoo Jeon Hyungsuk Ryu Hyunho Lee

Korean Journal of Chemical Engineering, December 2024, 41(13), 3483-3500(18)
https://doi.org/10.1007/s11814-024-00226-x

Abstract

Quantum dots (QDs) are gaining widespread attention for their applications as light-emitting diodes (LEDs) owing to their

ease of solution processing and high color purity. Furthermore, current QD light-emitting diodes (QLEDs) exhibit high

electroluminescence performance and lifetime comparable to those of organic LEDs. However, some challenges remain in

the commercialization of QLEDs for next-generation displays. One key issue is that blue QLEDs exhibit lower effi ciency

and lifetimes compared to red and green QLEDs, which is attributed to a deep valence band and wide bandgap. In this study,

we discuss recent developments that aim to enhance the effi ciency of blue QLEDs and explore the challenges that must be

addressed for their commercialization.

Keywords

Quantum dots (QDs) are gaining widespread attention for their applications as light-emitting diodes (LEDs) owing to their ease of solution processing and high color purity. Furthermore, current QD light-emitting diodes (QLEDs) exhibit high electroluminescence performance and lifetime comparable to those of organic LEDs. However, some challenges remain in the commercialization of QLEDs for next-generation displays. One key issue is that blue QLEDs exhibit lower effi ciency and lifetimes compared to red and green QLEDs, which is attributed to a deep valence band and wide bandgap. In this study, we discuss recent developments that aim to enhance the effi ciency of blue QLEDs and explore the challenges that must be addressed for their commercialization.