High Bandwidth Semi-Polar InGaN&#x002F;GaN Micro-LEDs With Low Current Injection for Visible Light Communication

Feifan Xu; Pengjiang Qiu; Tao Tao; Pengfei Tian; Xiaoyan Liu; Ting Zhi; Zili Xie; Bin Liu; Rong Zhang

doi:10.1109/JPHOT.2023.3235108

IEEE Photonics Journal (Jan 2023)

High Bandwidth Semi-Polar InGaN/GaN Micro-LEDs With Low Current Injection for Visible Light Communication

Feifan Xu,
Pengjiang Qiu,
Tao Tao,
Pengfei Tian,
Xiaoyan Liu,
Ting Zhi,
Zili Xie,
Bin Liu,
Rong Zhang

Affiliations

Feifan Xu: ORCiD; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Pengjiang Qiu: School of Information Science and Technology, Fudan University, Shanghai, China
Tao Tao: ORCiD; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
Pengfei Tian: ORCiD; School of Information Science and Technology, Fudan University, Shanghai, China
Xiaoyan Liu: ORCiD; College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, China
Ting Zhi: College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, China
Zili Xie: Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, 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.2023.3235108
Journal volume & issue: Vol. 15, no. 1
pp. 1 – 4

Abstract

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Micro-light-emitting diodes (micro-LEDs) with high modulation rates and low power consumption could attract growing attention as visible light communication (VLC) technology advances. The designed and fabricated semi-polar micro-LEDs have achieved high bandwidth at low current injection due to the reduced quantum-confined Stark effect (QCSE), which was significantly greater than that of typical c-plane at the same current injection. Semi-polar green micro-LEDs got a −3 dB bandwidth that surpasses 500 MHz and 1 GHz at low current densities of 43.8 A/cm2 and 120.6 A/cm2, while blue micro-LEDs exceed 500 MHz at low current densities of 76.6 A/cm2, respectively. Additionally, the free space VLC system has shown semi-polar blue and green micro-LED transmission data rates of 3.495 Gbps (433 A/cm2) and 3.483 Gbps (402 A/cm2) respectively. Semi-polar micro-LEDs, which can achieve low power consumption and high bandwidth, are anticipated to play a significant role in the development of energy-efficient VLC in the future.

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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