Print Email Facebook Twitter Monolayer coverage and channel length set the mobility in self-assembled monolayer field-effect transistors Title Monolayer coverage and channel length set the mobility in self-assembled monolayer field-effect transistors Author Mathijssen, S.G.J. Smits, E.C.P. van Hal, P.A. Wondergem, H.J. Ponomarenko, S.A. Moser, A. Resel, R. Bobbert, P.A. Kemerink, M. Janssen, R.A.J. de Leeuw, D.M. TNO Industrie en Techniek Publication year 2009 Abstract The mobility of self-assembled monolayer field-effect transistors (SAMFETs) traditionally decreases dramatically with increasing channel length. Recently, however, SAMFETs using liquid-crystalline molecules have been shown to have bulk-like mobilities that are virtually independent of channel length. Here, we reconcile these scaling relations by showing that the mobility in liquid crystalline SAMFETs depends exponentially on the channel length only when the monolayer is incomplete. We explain this dependence both numerically and analytically, and show that charge transport is not affected by carrier injection, grain boundaries or conducting island size. At partial coverage, that is when the monolayer is incomplete, liquid-crystalline SAMFETs thus form a unique model system to study size-dependent conductance originating from charge percolation in two dimensions. © 2009 Macmillan Publishers Limited. All rights reserved. Subject Nanotechnologyarticleatomic force microscopycontrolled studyfield effect transistorliquid crystalpriority journalself assembled monolayer field effect transistorsemiconductorstructure analysistopographytransmission electron microscopyX ray diffraction To reference this document use: http://resolver.tudelft.nl/uuid:5a1621fc-e135-487a-97f1-7dcc95e0e068 DOI https://doi.org/10.1038/nnano.2009.201 TNO identifier 279982 ISSN 1748-3387 Source Nature Nanotechnology, 4 (10), 674-680 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.