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TRANSFERRING-FREE TOP-GATED GRAPHENE TRANSISTORS FABRICATED ON GRAPHENE FILMS DIRECTLY GROWN ON SAPPHIRE SUBSTRATES

摘要


Transferring-free top-gated graphene transistors are demonstrated by using directly grown graphene on sapphire substrates. The improved field-effect mobility value 138 cm^2V^(-1)s^(-1) compared with back-gated transistors suggests that without the film transferring procedure, the device performances can be greatly enhanced. The results have demonstrated the potential of directly grown graphene for transferring-free graphene device fabrications.

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