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Nano Lett. 2010 Sep 8;10(9):3464-6. doi: 10.1021/nl101559n.

High-performance flexible graphene field effect transistors with ion gel gate dielectrics.

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1
Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul 156-743, Korea.

Abstract

A high-performance low-voltage graphene field-effect transistor (FET) array was fabricated on a flexible polymer substrate using solution-processable, high-capacitance ion gel gate dielectrics. The high capacitance of the ion gel, which originated from the formation of an electric double layer under the application of a gate voltage, yielded a high on-current and low voltage operation below 3 V. The graphene FETs fabricated on the plastic substrates showed a hole and electron mobility of 203 +/- 57 and 91 +/- 50 cm(2)/(V x s), respectively, at a drain bias of -1 V. Moreover, ion gel gated graphene FETs on the plastic substrates exhibited remarkably good mechanical flexibility. This method represents a significant step in the application of graphene to flexible and stretchable electronics.

PMID:
20704323
DOI:
10.1021/nl101559n
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