Transparent conductive graphene electrode in GaN-based ultra-violet light emitting diodes

Byung Jae Kim, Michael A. Mastro, Jennifer Hite, Charles R. Eddy, Ji Hyun Kim

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

We report a graphene-based transparent conductive electrode for use in ultraviolet (UV) GaN light emitting diodes (LEDs). A few-layer graphene (FLG) layer was mechanically deposited. UV light at a peak wavelength of 368nm was successfully emitted by the FLG layer as transparent contact to p-GaN. The emission of UV light through the thin graphene layer was brighter than through the thick graphene layer. The thickness of the graphene layer was characterized by micro-Raman spectroscopy. Our results indicate that this novel graphene-based transparent conductive electrode holds great promise for use in UV optoelectronics for which conventional ITO is less transparent than graphene.

Original languageEnglish
Pages (from-to)23030-23034
Number of pages5
JournalOptics Express
Volume18
Issue number22
DOIs
Publication statusPublished - 2010 Oct 25

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ultraviolet radiation
graphene
light emitting diodes
electrodes
ITO (semiconductors)
Raman spectroscopy
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Transparent conductive graphene electrode in GaN-based ultra-violet light emitting diodes. / Kim, Byung Jae; Mastro, Michael A.; Hite, Jennifer; Eddy, Charles R.; Kim, Ji Hyun.

In: Optics Express, Vol. 18, No. 22, 25.10.2010, p. 23030-23034.

Research output: Contribution to journalArticle

Kim, Byung Jae ; Mastro, Michael A. ; Hite, Jennifer ; Eddy, Charles R. ; Kim, Ji Hyun. / Transparent conductive graphene electrode in GaN-based ultra-violet light emitting diodes. In: Optics Express. 2010 ; Vol. 18, No. 22. pp. 23030-23034.
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