275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication

In this work, we fabricated and characterized 4 × 4 parallel flip-chip AlGaN-based micro-LED arrays with varied mesa diameters of 120 µm, 100 µm, 80 µm, and 60 µm. The reported mi...

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Autores principales:	Liang Guo, Yanan Guo, Jiankun Yang, Jianchang Yan, Jianguo Liu, Junxi Wang, Tongbo Wei
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2022
Materias:	Micro-LED arrays ultraviolet communication modulation bandwidth size dependence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
Acceso en línea:	https://doaj.org/article/9d5736dbb7584d0b81f555f01d26c28a
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spelling	oai:doaj.org-article:9d5736dbb7584d0b81f555f01d26c28a2021-12-04T00:00:05Z275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication1943-065510.1109/JPHOT.2021.3129648https://doaj.org/article/9d5736dbb7584d0b81f555f01d26c28a2022-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9623490/https://doaj.org/toc/1943-0655In this work, we fabricated and characterized 4 × 4 parallel flip-chip AlGaN-based micro-LED arrays with varied mesa diameters of 120 µm, 100 µm, 80 µm, and 60 µm. The reported micro-LED arrays have a maximum bandwidth of 380 MHz and a peak wavelength of ∼275 nm. It is found that the electrical and optical characteristics of AlGaN-based micro-LED arrays show strong size dependence for ultraviolet communication (UVC). The differential resistance increases from 28.8 Ω to 112 Ω, the external quantum efficiency (EQE) is increased by ∼30%, and the bandwidth doubles as the diameter of individual micro-LED decreases from 120 µm to 60 µm. Our research proves that tailoring the mesa size of parallel flip-chip AlGaN-based micro-LED arrays can further enhance its bandwidth and promote its application in UVC.Liang GuoYanan GuoJiankun YangJianchang YanJianguo LiuJunxi WangTongbo WeiIEEEarticleMicro-LED arraysultraviolet communicationmodulation bandwidthsize dependenceApplied optics. PhotonicsTA1501-1820Optics. LightQC350-467ENIEEE Photonics Journal, Vol 14, Iss 1, Pp 1-5 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Micro-LED arrays ultraviolet communication modulation bandwidth size dependence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467
spellingShingle	Micro-LED arrays ultraviolet communication modulation bandwidth size dependence Applied optics. Photonics TA1501-1820 Optics. Light QC350-467 Liang Guo Yanan Guo Jiankun Yang Jianchang Yan Jianguo Liu Junxi Wang Tongbo Wei 275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
description	In this work, we fabricated and characterized 4 × 4 parallel flip-chip AlGaN-based micro-LED arrays with varied mesa diameters of 120 µm, 100 µm, 80 µm, and 60 µm. The reported micro-LED arrays have a maximum bandwidth of 380 MHz and a peak wavelength of ∼275 nm. It is found that the electrical and optical characteristics of AlGaN-based micro-LED arrays show strong size dependence for ultraviolet communication (UVC). The differential resistance increases from 28.8 Ω to 112 Ω, the external quantum efficiency (EQE) is increased by ∼30%, and the bandwidth doubles as the diameter of individual micro-LED decreases from 120 µm to 60 µm. Our research proves that tailoring the mesa size of parallel flip-chip AlGaN-based micro-LED arrays can further enhance its bandwidth and promote its application in UVC.
format	article
author	Liang Guo Yanan Guo Jiankun Yang Jianchang Yan Jianguo Liu Junxi Wang Tongbo Wei
author_facet	Liang Guo Yanan Guo Jiankun Yang Jianchang Yan Jianguo Liu Junxi Wang Tongbo Wei
author_sort	Liang Guo
title	275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
title_short	275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
title_full	275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
title_fullStr	275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
title_full_unstemmed	275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
title_sort	275 nm deep ultraviolet algan-based micro-led arrays for ultraviolet communication
publisher	IEEE
publishDate	2022
url	https://doaj.org/article/9d5736dbb7584d0b81f555f01d26c28a
work_keys_str_mv	AT liangguo 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication AT yananguo 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication AT jiankunyang 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication AT jianchangyan 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication AT jianguoliu 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication AT junxiwang 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication AT tongbowei 275nmdeepultravioletalganbasedmicroledarraysforultravioletcommunication
_version_	1718373045907750912

275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication

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