Large-scale patterned multi-layer graphene films as transparent conducting electrodes for GaN light-emitting diodes.
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.
Jo
Gunho
G
Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Korea.
Choe
Minhyeok
M
Cho
Chu-Young
CY
Kim
Jin Ho
JH
Park
Woojin
W
Lee
Sangchul
S
Hong
Woong-Ki
WK
Kim
Tae-Wook
TW
Park
Seong-Ju
SJ
Hong
Byung Hee
BH
Kahng
Yung Ho
YH
Lee
Takhee
T