GaN-Based Cascade Micro Light-Emitting Diode in Parallel and Series Arrays for Visible Light Communication

Shihao Liang; Guobin Wang; Tao Tao; Feifan Xu; Kai Chen; Ting Zhi; Zhifang Zhu; Wenjuan Chen; Yong Li; Ke Xu; Bin Liu; Rong Zhang

doi:10.1109/JPHOT.2023.3278671

IEEE Photonics Journal (Jan 2023)

GaN-Based Cascade Micro Light-Emitting Diode in Parallel and Series Arrays for Visible Light Communication

Shihao Liang,
Guobin Wang,
Tao Tao,
Feifan Xu,
Kai Chen,
Ting Zhi,
Zhifang Zhu,
Wenjuan Chen,
Yong Li,
Ke Xu,
Bin Liu,
Rong Zhang

Affiliations

Shihao Liang: ORCiD; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Guobin Wang: Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu, China
Tao Tao: ORCiD; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Feifan Xu: ORCiD; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Kai Chen: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Ting Zhi: College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, China
Zhifang Zhu: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Wenjuan Chen: Lohua Chip-Display Technology Development (Jiangsu) Company, Ltd., Nantong, China
Yong Li: Lohua Chip-Display Technology Development (Jiangsu) Company, Ltd., Nantong, China
Ke Xu: Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu, China
Bin Liu: ORCiD; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Rong Zhang: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China

DOI: https://doi.org/10.1109/JPHOT.2023.3278671
Journal volume & issue: Vol. 15, no. 3
pp. 1 – 4

Abstract

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GaN-based micro light-emitting diode (LED) has gradually become one of the promising light sources for visible light communication (VLC), of which high modulation bandwidth has been demonstrated. In order to acquire high speed and high brightness for VLC application, the modulation bandwidth and optical performance of micro-LEDs were investigated in series and parallel in this work. The electrical characteristics, optical characteristics and communication characteristics of single-pixel, 2-pixel, 4-pixel series and parallel green micro-LEDs with different pixel sizes were systematically tested. High modulation bandwidth as much as 1.4 GHz was acquired by using 10 μm micro-LEDs with 4-pixel in parallel. It is found that parallel micro-LED array can achieve higher modulation bandwidth, higher brightness and higher stability as well, which can be used as the preferred mode for the development of micro-LED based VLC.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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