Field-effect transistors based on self-organized molecular nanostripes

Cavallini, M., Stoliar, P., Moulin, J. F., Surin, M., Leclère, P., Lazzaroni, R., Breiby, D. W., Andreasen, J. W., Nielsen, M. M., Sonar, P., Grimsdale, A. C., Mullen, K., & Biscarini, F. (2005) Field-effect transistors based on self-organized molecular nanostripes. Nano Letters, 5(12), pp. 2422-2425.

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Charge transport properties in organic semiconductors depend strongly on molecular order. Here we demonstrate field-effect transistors where drain current flows through a precisely defined array of nanostripes made of crystalline and highly ordered molecules. The molecular stripes are fabricated across the channel of the transistor by a stamp-assisted deposition of the molecular semiconductors from a solution. As the solvent evaporates, the capillary forces drive the solution to form menisci under the stamp protrusions. The solute precipitates only in the regions where the solution is confined by the menisci once the critical concentration is reached and self-organizes into molecularly ordered stripes 100-200 nm wide and a few monolayers high. The charge mobility measured along the stripes is 2 orders of magnitude larger than the values measured for spin-coated thin films.

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97 citations in Web of Science®

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ID Code: 75205
Item Type: Journal Article
Refereed: Yes
Keywords: Capillary flow, Crystalline materials, Deposition, Electric currents, Nanostructured materials, Semiconducting organic compounds, Thin films, Field-effect transistors, Self-organized molecular nanostripes, Spin-coated thin films, Stamp-assisted deposition, Transistors, fluorine, nanomaterial, terthienyl, thiophene derivative, article, chemistry, conformation, crystallization, electrochemistry, equipment, equipment design, instrumentation, methodology, nanotechnology, semiconductor, ultrastructure, Equipment Failure Analysis, Molecular Conformation, Nanostructures, Thiophenes
DOI: 10.1021/nl051685+
ISSN: 15306984 (ISSN)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: © 2005 American Chemical Society
Deposited On: 29 Oct 2014 05:48
Last Modified: 30 Oct 2014 00:53

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