title: Large-scale patterned multi-layer graphene films as transparent conducting electrodes for GaN light-emitting diodes.
abstract: This work demonstrates a large-scale batch fabrication of GaN light-emitting diodes (LEDs) with patterned multi-layer graphene (MLG) as transparent conducting electrodes. MLG films were synthesized using a chemical vapor deposition (CVD) technique on nickel films and showed typical CVD-synthesized MLG film properties, possessing a sheet resistance of [Formula: see text] with a transparency of more than 85% in the 400-800 nm wavelength range. The MLG was applied as the transparent conducting electrodes of GaN-based blue LEDs, and the light output performance was compared to that of conventional GaN LEDs with indium tin oxide electrodes. Our results present a potential development toward future practical application of graphene electrodes in optoelectronic devices.
authors.affiliation: Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Korea.
authors.forename: Gunho
authors.initials: G
authors.lastname: Jo
authors.forename: Minhyeok
authors.initials: M
authors.lastname: Choe
authors.forename: Chu-Young
authors.initials: CY
authors.lastname: Cho
authors.forename: Jin Ho
authors.initials: JH
authors.lastname: Kim
authors.forename: Woojin
authors.initials: W
authors.lastname: Park
authors.forename: Sangchul
authors.initials: S
authors.lastname: Lee
authors.forename: Woong-Ki
authors.initials: WK
authors.lastname: Hong
authors.forename: Tae-Wook
authors.initials: TW
authors.lastname: Kim
authors.forename: Seong-Ju
authors.initials: SJ
authors.lastname: Park
authors.forename: Byung Hee
authors.initials: BH
authors.lastname: Hong
authors.forename: Yung Ho
authors.initials: YH
authors.lastname: Kahng
authors.forename: Takhee
authors.initials: T
authors.lastname: Lee