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Proceedings Paper

Morphology of cleaved rubrene and its evolution in an ambient environment
Author(s): R. J. Thompson; B. Yadin; Z. J Grout; S. Hudziak; C. L. Kloc; N. J. Curson; O. Mitrofanov
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Paper Abstract

Cleaved rubrene crystals offer reproducible and unoxidized surfaces ideal for investigation of the environmental dependence of the charge transport properties. Using atomic force microscopy (AFM), we found that the ambient environment induces molecular reorganization on a cleaved rubrene surface. Nanoscale beads and molecular fingers are formed on new surfaces exposed to the atmospheric environment. The bead formation is found to be suppressed in the argon environment. Studied by conductive AFM, the beads show insulating behavior. The observations suggest that the bead formation process is related to oxidation and charge transport modification of the rubrene surface.

Paper Details

Date Published: 16 September 2011
PDF: 7 pages
Proc. SPIE 8117, Organic Field-Effect Transistors X, 811712 (16 September 2011); doi: 10.1117/12.893058
Show Author Affiliations
R. J. Thompson, London Ctr. for Nanotechnology (United Kingdom)
Univ. College London (United Kingdom)
B. Yadin, London Ctr. for Nanotechnology (United Kingdom)
Z. J Grout, London Ctr. for Nanotechnology (United Kingdom)
S. Hudziak, Univ. College London (United Kingdom)
C. L. Kloc, Nanyang Technological Univ. (Singapore)
N. J. Curson, London Ctr. for Nanotechnology (United Kingdom)
Univ. College London (United Kingdom)
O. Mitrofanov, London Ctr. for Nanotechnology (United Kingdom)
Univ. College London (United Kingdom)


Published in SPIE Proceedings Vol. 8117:
Organic Field-Effect Transistors X
Zhenan Bao; Iain McCulloch, Editor(s)

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