High uniformity red µ-LED array with a current efficiency of 2.6 cd/A and ns-level response time

Chee-Keong Yee; Jia-Ming Lin; Ming-June Wu; Hao-Tien Cheng; Chun-Wei Huang; Chia-An Lee; Kuan-Heng Lin; Chung-Chih Wu; Chao-Hsiu Wu

doi:10.1364/OL.490016

High uniformity red µ-LED array with a current efficiency of 2.6 cd/A and ns-level response time

Opt Lett. 2023 Jun 1;48(11):2933-2936. doi: 10.1364/OL.490016.

Authors

Chee-Keong Yee, Jia-Ming Lin, Ming-June Wu, Hao-Tien Cheng, Chun-Wei Huang, Chia-An Lee, Kuan-Heng Lin, Chung-Chih Wu, Chao-Hsiu Wu

PMID: 37262247
DOI: 10.1364/OL.490016

Abstract

This paper demonstrates an AlGaInP-based 620-nm red micro-light-emitting-diode (µ-LED) array and studies the enhancement effect of the surface treatments using (NH₄)₂Sx solutions by comparing the characteristics of µ-LED arrays with and without the (NH₄)₂Sx treatment. Furthermore, our µ-LED array demonstrates a measurement of the current efficiency (2.6 cd/A), which improves the light output uniformity. Also, we apply a setup for measuring the response time at the fast ns-level to analyze the effect of passivation in AlGaInP-based µ-LED arrays.