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

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

2004-07-15

arxiv.org/abs/cond-mat/0407407v2

Physics

Condensed Matter

Materials Science

submitted to Appl. Phys. Lett

Scientific paper

10.1063/1.1826239

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.

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