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Nanotechnology. 2010 Apr 30;21(17):175201. doi: 10.1088/0957-4484/21/17/175201. Epub 2010 Apr 6.

Large-scale patterned multi-layer graphene films as transparent conducting electrodes for GaN light-emitting diodes.

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  • 1Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Korea.


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.

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