Structure optimization of InGaN-GaN ultraviolet light-emitting diode with a low-energy electron injection mechanism

Tae Geun Kim, Kyoung Chan Kim, Dong Ho Kim, Suk Ho Yoon, Jeoung Wook Lee, Cheol Soo Sone, Yong Jo Park

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We propose a way of increasing overall efficiency of InGaN-GaN ultraviolet light-emitting diodes (UV LEDs) by placing a thin Si-doped AlGaN layer beneath the multiple quantum well (MQW). The AlGaN thin layer plays a role of tunneling barrier for the electrons, making a low-energy electron injection possible. The effect of the AlGaN thin film is verified by the simulation regarding the carrier distributions. By using this idea, the overall efficiency of the UV LED is enhanced by 13.5% over that of the conventional UV LEDs.

Original languageEnglish
Pages (from-to)264-269
Number of pages6
JournalJournal of Crystal Growth
Volume272
Issue number1-4 SPEC. ISS.
DOIs
Publication statusPublished - 2004 Dec 10

Fingerprint

Electron injection
ultraviolet radiation
Light emitting diodes
light emitting diodes
electron energy
injection
optimization
Semiconductor quantum wells
quantum wells
Thin films
Electrons
thin films
aluminum gallium nitride
Ultraviolet Rays
electrons
simulation

Keywords

  • A1. Electron tunneling barrier
  • A3. Metalorganic chemical vapor deposition
  • B3. Ultraviolet (UV) light-emitting diodes

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Structure optimization of InGaN-GaN ultraviolet light-emitting diode with a low-energy electron injection mechanism. / Kim, Tae Geun; Kim, Kyoung Chan; Kim, Dong Ho; Yoon, Suk Ho; Lee, Jeoung Wook; Sone, Cheol Soo; Park, Yong Jo.

In: Journal of Crystal Growth, Vol. 272, No. 1-4 SPEC. ISS., 10.12.2004, p. 264-269.

Research output: Contribution to journalArticle

Kim, Tae Geun ; Kim, Kyoung Chan ; Kim, Dong Ho ; Yoon, Suk Ho ; Lee, Jeoung Wook ; Sone, Cheol Soo ; Park, Yong Jo. / Structure optimization of InGaN-GaN ultraviolet light-emitting diode with a low-energy electron injection mechanism. In: Journal of Crystal Growth. 2004 ; Vol. 272, No. 1-4 SPEC. ISS. pp. 264-269.
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AU - Sone, Cheol Soo

AU - Park, Yong Jo

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