Optics Letters, volume 47, issue 14, pages 3584
Parallel micro-LED arrays with a high modulation bandwidth for a visible light communication
Sunan Yao
1
,
Huaqing Chai
1
,
Lei Lei
1
,
Zihe Zhu
1
,
Guoqiang Li
1, 2
,
Wang Wenliang
1
1
South china university of technology
|
2
Guangdong Choicore Optoelectronics Co., Ltd.
|
Publication type: Journal Article
Publication date: 2022-07-13
Journal:
Optics Letters
scimago Q1
SJR: 1.040
CiteScore: 6.6
Impact factor: 3.1
ISSN: 01469592, 15394794
PubMed ID:
35838736
Atomic and Molecular Physics, and Optics
Abstract
Over the past few decades, GaN-based LEDs have been widely used in solid-state lighting (SSL) due to their energy-saving and long-lifetime characteristics. However, the limited modulation bandwidth of conventional commercial LED chips limits their application in a high-speed visible light communication (VLC) system. Herein, this work designs vertical parallel micro-LED arrays with different array numbers to develop LED sources for communication and lighting. The as-prepared micro-LEDs in a 2 × 2 array reveal a high modulation bandwidth of ∼785 MHz at 6.67 kA/cm2. Meanwhile, the light output power is over 7 mW, which is more suitable for VLC in free space.
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