Inkjet-printed graphene electronics.

Torrisi, Felice; Hasan, Tawfique; Wu, Weiping; Sun, Zhipei; Lombardo, Antonio; Kulmala, Tero S; Hsieh, Gen-Wen; Jung, Sungjune et al. · ACS Nano · 2012

basic_science · Level V

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Abstract

We demonstrate inkjet printing as a viable method for large-area fabrication of graphene devices. We produce a graphene-based ink by liquid phase exfoliation of graphite in N-methylpyrrolidone. We use it to print thin-film transistors, with mobilities up to ∼95 cm(2) V(-1) s(-1), as well as transparent and conductive patterns, with ∼80% transmittance and ∼30 kΩ/□ sheet resistance. This paves the way to all-printed, flexible, and transparent graphene devices on arbitrary substrates.