Effects of polarized organosilane self-assembled monolayers on organic single-crystal field-effect transistors

Abstract

The surface conductivity is measured by a four-probe technique for pentacene and rubrene single-crystals laminated on polarized and nearly unpolarized molecular monolayers with application of perpendicular electric fields. The polarization of the self-assembled monolayers (SAMs) shifts the threshold gate voltage, while maintaining a very low subthreshold swing of the single-crystal devices (0.11 V/decade). The results, excluding influences of parasitic contacts and grain boundaries, demonstrate SAM-induced nanoscale charge injection up to ~10^12 cm^-2 at the surface of the organic single crystals.

submitted to Appl. Phys. Lett

References in corpus (6)

• Field Effect Transistors on Rubrene Single Crystals with Parylene Gate Insulator
• Single-Crystal Organic Field Effect Transistors with the Hole Mobility ~ 8 cm2/Vs
• Field-Effect Transistors on Tetracene Single Crystals
• Field-induced charge transport at the surface of pentacene single crystals: a method to study charge dynamics of 2D electron systems in organic crystals
• Hole mobility in organic single crystals measured by a "flip-crystal" field-effect technique
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Cited by in corpus (5)

• Electronic functionalization of the surface of organic semiconductors with self-assembled monolayers
• Hall effect of quasi-hole gas in organic single-crystal transistors
• Photo-induced charge transfer across the interface between organic molecular crystals and polymers
• Photochemical reaction on graphene surfaces controlled by substrate-surface modification with polar self-assembled monolayers
• Adsorbates as a charge-carrier reservoir for electrostatic carrier doping to graphene