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

J. Takeya·T. Nishikawa·T. Takenobu·S. Kobayashi·C. Goldmann·C. Krellner·T. Shimoda·T. Mitani·Y Iwasa·B. Batlogg
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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.

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J. Takeya, T. Nishikawa, T. Takenobu, S. Kobayashi, C. Goldmann, C. Krellner, T. Shimoda, T. Mitani, Y Iwasa, B. Batlogg. 2004-07-16. Effects of polarized organosilane self-assembled monolayers on organic single-crystal field-effect transistors. https://doi.org/10.1063/1.1826239

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