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 9 2020
Accepted
07 12 2020
First published
08 12 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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