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

Byung Jae Kim; Michael A. Mastro; Jennifer Hite; Charles R. Eddy; Jihyun Kim

doi:10.1364/OE.18.023030

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

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

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

40 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 language	English
Pages (from-to)	23030-23034
Number of pages	5
Journal	Optics Express
Volume	18
Issue number	22
DOIs	https://doi.org/10.1364/OE.18.023030
Publication status	Published - 2010 Oct 25

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.18.023030

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title = "Transparent conductive graphene electrode in GaN-based ultra-violet light emitting diodes",

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.",

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AU - Kim, Byung Jae

AU - Mastro, Michael A.

AU - Hite, Jennifer

AU - Eddy, Charles R.

AU - Kim, Jihyun

PY - 2010/10/25

Y1 - 2010/10/25

N2 - 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.

AB - 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.

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

Abstract

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