Ultraviolet electroluminescence from two-dimensional ZnO nanomesh/GaN heterojunction light emitting diodes

Jing Ye, Yu Zhao, Libin Tang, Li Miao Chen, C. M. Luk, Siu Fung Yu, S. T. Lee, Shu Ping Lau

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)

Abstract

The authors report the fabrication of heterojunction light emitting diodes (LEDs) based on two-dimensional (2D) hexagonal ordered n-type ZnO nanomesh and p-type GaN. The 2D ZnO nanomesh array was prepared by employing polystyrene spheres as a template. When a forward bias was applied to the LED, a strong ultraviolet (UV) electroluminescence peaked at 385 nm can be observed. The peak deconvolution revealed three emission peaks at 370, 388, and 420 nm. The origin of these emission peaks will be discussed. In addition, the LED was capable of exciting a red phosphor to convert UV light into red light.
Original languageEnglish
Article number263101
JournalApplied Physics Letters
Volume98
Issue number26
DOIs
Publication statusPublished - 27 Jun 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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