Review-Progress in High Performance III-Nitride Micro-Light-Emitting Diodes

The developments of high performance InGaN based micro-light-emitting diodes (mu LEDs) are discussed. We first review the early demonstrations of mu LEDs and the state-of-the-art outstanding achievements on the emerging high-quality display and visible-light communication applications. Due to the miniature dimensions of mu LEDs, the key understandings and the significant device advancements to achieve excellent energy efficiency are addressed. Lastly, two other critical challenges of mu LEDs, namely full-color scheme and mass transfer technique, and their potential solutions are explored for future investigations. (c) The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org.