Challenges of II‐VI and III‐V Blue Quantum Dot Light‐Emitting Diodes
Name
Advanced Materials - 2025 - Tan - Challenges of II‐VI and III‐V Blue Quantum Dot Light‐Emitting Diodes.pdf
Description
Published version
Size
16.35 MB
Format
Adobe PDF
Checksum (MD5)
41164332cb44d20d7f7a1aa3a49e9ba5
Author(s)
Tan, Shaun
Horowitz, Jonah R
Tye, Oliver J
Bawendi, Moungi G
Date Issued
September 22, 2025
Journal
Advanced Materials
Publisher
Wiley
Citation
Tan, Shaun, Horowitz, Jonah R, Tye, Oliver J and Bawendi, Moungi G. 2025. "Challenges of II‐VI and III‐V Blue Quantum Dot Light‐Emitting Diodes." Advanced Materials, 38 (2).
Version
Final published version
Abstract
Quantum dot light-emitting diodes (QD-LEDs) are electroluminescent devices where the emissive layer consists of inorganic colloidal quantum dots. Recent breakthroughs have enabled the development of bright and efficient blue-emitting QD-LEDs based on heavy metal-free compositions. However, challenges remain that hinder their practical application in electroluminescent displays and lighting technologies. The primary obstacle is their limited operational lifetimes which remain significantly below practical requirement standards, especially in comparison to the red- and green-emitting QD-LEDs. Another important issue is the low color purity and broad spectral linewidths of heavy metal-free blue quantum dot compositions. Additional problems include transient electroluminescent behaviors such as fluorescence intermittency and positive aging effects. This review examines the current understanding of the physical mechanisms underlying these challenges faced by blue QD-LEDs. Often, contradictory explanations are proposed to account for the same phenomenon. Here, potential interpretations are suggested that may help reconcile the conflicting reports. Recent advances are further examined that have contributed to the development of state-of-the-art blue QD-LEDs.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
10.1002/adma.202512379
