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Catalyst patterned growth of interconnecting graphene layer on SiO2/Si substrate for integrated devices

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2 Author(s)
Lee, Yun-Hi ; Department of Physics, National Research Laboratory for Nano Device Physics, Korea University, Seoul 136-713, Republic of Korea ; Lee, Jong-Hee

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The authors report a simple site selective growth for producing interconnecting suspended graphene on SiO2/Si substrate. The outcome of the process depends on the thickness of the catalyst (Ni) and process ambient on SiO2/Si wafer by low pressure fast heating chemical-vapor deposition at 820 °C for periods from 30 s to 10 min. Raman spectroscopy revealed that the graphene grown on the substrate consists of from 1 to ≪20 layers, with the number of layers depending on the thickness of the catalyst (Ni). Also, the thickness of Ni catalyst determines whether the graphite layers (GLs) are grown in a suspended form or adhered to the substrate. The possibility of producing qualified as-grown GL supported on a wafer without further processing, such as transferring to another substrate, should contribute to further scientific research and development of graphene.

Published in:

Applied Physics Letters  (Volume:95 ,  Issue: 14 )