NANOTECHNOLOGIES For 21th Century IV: Nanotech research and applications Device applications of graphene prepared by chemical vapor deposition Shinji Koh College of Science and Engineering Dep. of Electrical Engineering and Electronics Aoyama Gakuin University
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NANOTECHNOLOGIES For 21th Century IV: Nanotech research and applications
Device applications of graphene prepared by
chemical vapor deposition
Shinji Koh College of Science and Engineering
Dep. of Electrical Engineering and ElectronicsAoyama Gakuin University
Aoyama Gakuin UniversityPrivate UniversityFounded in 1874
Faculty member ~600Undergradauates ~17,000Graduate students ~1,200
KANAGAWASagamihara campus
I work here!
TOKYOAoyama campus
SHIBUYA
Nature Index2018
5th positionJapanese academic
institution
1. CVD growth of graphene on Ir(111)/sapphire
2. Device applications of CVD graphene grown on Cu
a. Optically transparent antennas
b. Free chlorine sensors
OUTLINE
2-D honeycomb lattice of carbon atoms
GRAPHENE
• Ultrathin ~0.3 nm
• High Conductivity of
Electricity and Heat
• High Mechanical Strength
• High Optical Transparency
(97.7%)
CVD Growth of Graphene
Chemical vapor deposition (CVD)
Large-area and high-quality graphene sheet
Scalable technology
Suitable for industrial applications
Graphene prepared by scotch tape method
CVD Growth on Cu substrate
Cu metal catalyst substrate (~0.035 mm)
Low cost
Low carbon solubility
Self-limiting growth of
monolayer graphene
Inte
nsity (
a.u
.)
3000250020001500
Raman Shift (cm-1
)
G
2D
Transfer of Graphene
We can transfer graphene ontoVarious types of substrates.