AlGaN ultraviolet micro-LEDs

Pengfei Tian, Xinyi Shan, Shijie Zhu, Enyuan Xie, Jonathan J. D. McKendry, Erdan Gu, Martin D. Dawson

Research output: Contribution to journalReview articlepeer-review

7 Citations (Scopus)
14 Downloads (Pure)


AlGaN-based UV LEDs have proven to have broad applications in many fields including sterilization, disinfection, purification, and phototherapy, but the performance still needs to be further improved. Benefiting from advantages such as better current spreading, lower self-heating effect and higher light extraction efficiency achieved by the reduced LED size, UV micro-LEDs are expected to improve quantum efficiency and thus can expand more potential applications. In this article, performance enhancement techniques and applications of UV micro-LEDs will be reviewed, providing an outlook for further development of AlGaN-based UV-LEDs. The micro-LED format offers possibilities to address fundamental issues that UV LEDs confront in general, but also demonstrates specific characteristics and performance advantages opening up new areas of application including high-speed optical communication, time-resolved fluorescence lifetime measurement, optical pumping, direct writing and charge management.
Original languageEnglish
Article number3300214
Pages (from-to)1-14
Number of pages15
JournalIEEE Journal of Quantum Electronics
Issue number4
Publication statusPublished - 28 Jul 2022


  • AlGaN UV micro-LED
  • optical communication
  • mask-free photolithography
  • time-resolved fluorescence
  • charge management


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