Issue 2, 2021

Technology progress on quantum dot light-emitting diodes for next-generation displays

Abstract

Quantum dot light-emitting diodes (QD-LEDs) are widely recognised as great alternatives to organic light-emitting diodes (OLEDs) due to their enhanced performances. This focus article surveys the current progress on the state-of-the-art QD-LED technology including material synthesis, device optimization and innovative fabrication processes. A discussion on the material synthesis of core nanocrystals, shell layers and surface-binding ligands is presented for high photoluminescence quantum yield (PLQY) quantum dots (QDs) using heavy-metal free materials. The operational principles of several types of QD-LED device architectures are also covered, and the recent evolution of device engineering technologies is investigated. By exploring the fabrication process for pixel-patterning of QD-LEDs on an active-matrix backplane for full-colour display applications, we anticipate further improvement in device performance for the commercialisation of next-generation displays.

Graphical abstract: Technology progress on quantum dot light-emitting diodes for next-generation displays

Article information

Article type
Focus
Submitted
22 sep 2020
Accepted
07 dec 2020
First published
08 dec 2020
This article is Open Access
Creative Commons BY license

Nanoscale Horiz., 2021,6, 68-77

Technology progress on quantum dot light-emitting diodes for next-generation displays

S. Y. Bang, Y. Suh, X. Fan, D. Shin, S. Lee, H. W. Choi, T. H. Lee, J. Yang, S. Zhan, W. Harden-Chaters, C. Samarakoon, L. G. Occhipinti, S. D. Han, S. Jung and J. M. Kim, Nanoscale Horiz., 2021, 6, 68 DOI: 10.1039/D0NH00556H

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