GaN quantum dot UV light emitting diode

Jeong Sik Lee, Satoru Tanaka, Peter Ramvall, Hiroaki Okagawa

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

The fabrication and evaluation of a UV light-emitting diode (LED) incorporating GaN quantum dots as the active layer is demonstrated. The GaN quantum dots were fabricated on an AlxGa1-xN (x∼0.1) surface using Si as an antisurfactant. Exposing the AlxGa 1-xN surface to the Si antisurfactant prior to GaN growth enabled the formation of quantum dots on a surface where growth by the Stranski-Krastanov mode would not be possible. A fairly high density of dots (10 10-1011 cm-2) with controllable dot sizes was achieved. Room temperature luminescence at 360 nm was clearly observed during current injection (cw) into an LED structure including the GaN quantum dots. The origin of the electroluminescence is discussed by comparing it to photoluminescence measurements.

Original languageEnglish
Pages (from-to)11-16
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume798
DOIs
Publication statusPublished - 2003
Externally publishedYes
EventGaN and Related Alloys - 2003 - Boston, MA, United States
Duration: Dec 1 2003Dec 5 2003

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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