Enhanced areal efficiency from 370nm AlGaN micro-ring light emitting diodes

H.W. Choi, M.D. Dawson

Research output: Contribution to journalArticle

Abstract

The electrical and optical characteristics of a 370 nm AlGaN light-emitting diode device based on a microring-array geometry are presented. By structuring the light emission area into an interconnected array of micro-scale rings, the directed light extraction efficiency is enhanced, and current spreading in the n-type cladding layers is improved. A reduction of differential series resistance is observed, and the device saturates at a higher current as the carriers are injected efficiently and uniformly across the junction areas.
LanguageEnglish
Pages2854-2857
Number of pages3
JournalPhysica Status Solidi C
Volume2
Issue number7
DOIs
Publication statusPublished - 2005

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light emitting diodes
rings
light emission
high current
geometry

Keywords

  • light emission
  • optics
  • geometry

Cite this

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title = "Enhanced areal efficiency from 370nm AlGaN micro-ring light emitting diodes",
abstract = "The electrical and optical characteristics of a 370 nm AlGaN light-emitting diode device based on a microring-array geometry are presented. By structuring the light emission area into an interconnected array of micro-scale rings, the directed light extraction efficiency is enhanced, and current spreading in the n-type cladding layers is improved. A reduction of differential series resistance is observed, and the device saturates at a higher current as the carriers are injected efficiently and uniformly across the junction areas.",
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Enhanced areal efficiency from 370nm AlGaN micro-ring light emitting diodes. / Choi, H.W.; Dawson, M.D.

In: Physica Status Solidi C, Vol. 2, No. 7, 2005, p. 2854-2857.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Dawson, M.D.

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AB - The electrical and optical characteristics of a 370 nm AlGaN light-emitting diode device based on a microring-array geometry are presented. By structuring the light emission area into an interconnected array of micro-scale rings, the directed light extraction efficiency is enhanced, and current spreading in the n-type cladding layers is improved. A reduction of differential series resistance is observed, and the device saturates at a higher current as the carriers are injected efficiently and uniformly across the junction areas.

KW - light emission

KW - optics

KW - geometry

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