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Mobility Enhancement of Graphene Nanoribbon by ALD HfO2 and Its Optoelectronic Properties

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Abstract

We demonstrated that depositing HfO2 film on graphene nanoribbons greatly enhance the mobility through weakening the Coulombic interactions. As a result, the graphene nanoribbon photodetectors with HfO2 layer exhibits high responsivity of ~2A/W at room temperature.

© 2015 Optical Society of America

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