High-Performance Flexible Graphene Field Effect Transistors with Ion Gel Gate Dielectrics
- 12 August 2010
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 10 (9), 3464-3466
- https://doi.org/10.1021/nl101559n
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 cm2/(V·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.Keywords
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