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  4. Polymer-electrolyte gated graphene transistors for analog and digital phase detection
 
research article

Polymer-electrolyte gated graphene transistors for analog and digital phase detection

Sagar, Adarsh
•
Balasubramanian, Kannan
•
Burghard, Marko  
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2011
Applied Physics Letters

We present an alternating current (ac) circuit based on a misoriented bilayer graphene device for analog and digital phase detection. We exploit the ambipolar nature of the transfer characteristics of a misoriented bilayer graphene transistor. The transistor action here is realized using an electrochemical gate integrated into a solid polymer electrolyte layer. This unique combination provides a voltage gain close to unity under ambient conditions, which is one order of magnitude higher than that attainable in back-gated devices. The achieved gain provides sufficient sensitivity to detect phase differences between pairs of analog or digital signals. (C) 2011 American Institute of Physics. [doi:10.1063/1.3615247]

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