title: All-printed thin-film transistors from networks of liquid-exfoliated nanosheets.
abstract: All-printed transistors consisting of interconnected networks of various types of two-dimensional nanosheets are an important goal in nanoscience. Using electrolytic gating, we demonstrate all-printed, vertically stacked transistors with graphene source, drain, and gate electrodes, a transition metal dichalcogenide channel, and a boron nitride (BN) separator, all formed from nanosheet networks. The BN network contains an ionic liquid within its porous interior that allows electrolytic gating in a solid-like structure. Nanosheet network channels display on:off ratios of up to 600, transconductances exceeding 5 millisiemens, and mobilities of >0.1 square centimeters per volt per second. Unusually, the on-currents scaled with network thickness and volumetric capacitance. In contrast to other devices with comparable mobility, large capacitances, while hindering switching speeds, allow these devices to carry higher currents at relatively low drive voltages.
authors.affiliation: School of Physics, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and BioEngineering Research (AMBER), Trinity College Dublin, Dublin 2, Ireland.
authors.forename: Adam G
authors.identifier: 0000-0002-6070-7070
authors.initials: AG
authors.lastname: Kelly
authors.affiliation: School of Chemistry, CRANN and AMBER, Trinity College Dublin, Dublin 2, Ireland. hallamt@tcd.ie colemaj@tcd.ie.
authors.forename: Toby
authors.identifier: 0000-0003-2327-6715
authors.initials: T
authors.lastname: Hallam
authors.affiliation: School of Physics, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and BioEngineering Research (AMBER), Trinity College Dublin, Dublin 2, Ireland.
authors.forename: Claudia
authors.initials: C
authors.lastname: Backes
authors.affiliation: School of Physics, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and BioEngineering Research (AMBER), Trinity College Dublin, Dublin 2, Ireland.
authors.forename: Andrew
authors.initials: A
authors.lastname: Harvey
authors.affiliation: School of Physics, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and BioEngineering Research (AMBER), Trinity College Dublin, Dublin 2, Ireland.
authors.forename: Amir Sajad
authors.identifier: 0000-0003-0587-9184
authors.initials: AS
authors.lastname: Esmaeily
authors.affiliation: School of Physics, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and BioEngineering Research (AMBER), Trinity College Dublin, Dublin 2, Ireland.
authors.forename: Ian
authors.identifier: 0000-0002-5946-5377
authors.initials: I
authors.lastname: Godwin
authors.affiliation: School of Chemistry, CRANN and AMBER, Trinity College Dublin, Dublin 2, Ireland.
authors.forename: João
authors.identifier: 0000-0003-4217-3842
authors.initials: J
authors.lastname: Coelho
authors.affiliation: School of Chemistry, CRANN and AMBER, Trinity College Dublin, Dublin 2, Ireland.
authors.forename: Valeria
authors.initials: V
authors.lastname: Nicolosi
authors.affiliation: Chemical Engineering Department, Delft University of Technology, NL-2629 HZ Delft, Netherlands.
authors.forename: Jannika
authors.identifier: 0000-0002-6054-9615
authors.initials: J
authors.lastname: Lauth
authors.affiliation: Chemical Engineering Department, Delft University of Technology, NL-2629 HZ Delft, Netherlands.
authors.forename: Aditya
authors.identifier: 0000-0002-5840-8768
authors.initials: A
authors.lastname: Kulkarni
authors.affiliation: Materials Research & Development, Toyota Motor Europe, B-1930 Zaventem, Belgium.
authors.forename: Sachin
authors.identifier: 0000-0002-9149-7440
authors.initials: S
authors.lastname: Kinge
authors.affiliation: Chemical Engineering Department, Delft University of Technology, NL-2629 HZ Delft, Netherlands.
authors.forename: Laurens D A
authors.initials: LD
authors.lastname: Siebbeles
authors.affiliation: School of Chemistry, CRANN and AMBER, Trinity College Dublin, Dublin 2, Ireland.|Institute of Physics, EIT 2, Faculty of Electrical Engineering and Information Technology, Universität der Bundeswehr, München, Germany.
authors.forename: Georg S
authors.initials: GS
authors.lastname: Duesberg
authors.affiliation: School of Physics, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials and BioEngineering Research (AMBER), Trinity College Dublin, Dublin 2, Ireland. hallamt@tcd.ie colemaj@tcd.ie.
authors.forename: Jonathan N
authors.identifier: 0000-0001-9659-9721
authors.initials: JN
authors.lastname: Coleman