http://www.cnr.it/ontology/cnr/individuo/prodotto/ID25031

Controlling the Early Stages of Pentacene Growth by Supersonic Molecular Beam Deposition (Articolo in rivista)

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Controlling the Early Stages of Pentacene Growth by Supersonic Molecular Beam Deposition (Articolo in rivista) (literal)

Anno

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Alternative label

Y. Wu (1); T. Toccoli (2); N. Koch (3); E. Iacob (3); A. Pallaoro (2); P. Rudolf (1); S. Iannotta (2) (2007)
Controlling the Early Stages of Pentacene Growth by Supersonic Molecular Beam Deposition
in Physical review letters (Print); The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)

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Y. Wu (1); T. Toccoli (2); N. Koch (3); E. Iacob (3); A. Pallaoro (2); P. Rudolf (1); S. Iannotta (2) (literal)

Pagina inizio

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selected for February, 26, 2007 issue of Virtual Journal of Nanoscale Science and Technology http://www.vjnano.org (literal)

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Rivista

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selected for February, 26, 2007 issue of Virtual Journal of Nanoscale Science and Technology http://www.vjnano.org (literal)

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Note

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(1) Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, NL-9747 AG, Groningen, The Netherlands (2) IFN-CNR, Istituto di Fotonica e Nanotecnologie, Via Sommarive, 18 I-38050 Povo, Trento, Italy (3) Institut fu¨r Physik, Humboldt-Universita¨t zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany (4) IRST--ITC--Physics and Chemistry of Surfaces and Interfaces Division, Via Sommarive, 18 I-38050 Povo, Trento, Italy (literal)

Titolo

Controlling the Early Stages of Pentacene Growth by Supersonic Molecular Beam Deposition (literal)

Abstract

The key role of the pentacene kinetic energy (Ek) in the early stages of growth on SiOx=Si is demonstrated: islands with smooth borders and increased coalescence differ remarkably from fractal-like thermal growth. Increasing Ek to 6.4 eV, the morphology evolves towards higher density of smaller islands. At higher coverage, coalescence grows with Ek up to a much more uniform, less defected monolayer. The growth, interpreted by the diffusion mediated model, shows the critical nucleus changing from 3 to 2 pentacene for Ek > 5-6 eV. Optimal conditions to produce single crystalline films are envisaged. (literal)

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