Journal
RSC ADVANCES
Volume 6, Issue 52, Pages 46244-46248Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra08354d
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Funding
- National Natural Science Foundation of China [91123018, 61172040, 61172041]
- Shaanxi Natural Science Foundation [2014JM7277]
- Fundamental Research Funds for the Central Universities
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A novel graphene-metal contact structure that an extra layer of graphene square flake (GSF) array sandwiched between the graphene channel and the metal to reduce contact resistance is designed for the first time. This structure reduces the contact resistance (R-c) by 74.3% for single layer graphene. For a graphene channel length of 3 millimeters and width of 10 mu m an average R-c of 485 Omega mu m is obtained. Using this method, even a small R-c of lower than 100 Omega mu m was observed for some samples. The dangling bonds at the edges of the sandwiched GSF array are used to both surely decrease the contact resistance and prevent etching of the graphene channel from the attenuating transmission current.
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