|Ringk, A.; Roelofs, W.S.C.; Smits, E.C.P.; van der Marel, C.; Salzmann, I.; Neuhold, A.; Gelinck, G.H.; Resel, R.; de Leeuw, D.M.; Strohriegl, P.: n-Type self-assembled monolayer field-effect transistors for flexible organic electronics, Organic Electronics, 14(5), 1297-1304 (2013) -- DOI: 10.1016/j.orgel.2013.02.016|
Within this work we present n-type self-assembled monolayer field-effect transistors (SAMFETs) based on a novel perylene bisimide. The molecule spontaneously forms a covalently fixed monolayer on top of an aluminium oxide dielectric via a phosphonic acid anchor group. Detailed studies revealed an amorphous, two-dimensional semiconducting sheet on top the dielectric. Reliable transistors with electron mobilities on the order of 10−3 cm2/V s with limited hysteresis were achieved on rigid as well on flexible substrates. Furthermore, a flexible NMOS-bias inverter based on SAMFETs is demonstrated for the first time.