Morphology of cleaved rubrene and its evolution in an ambient environment

R. J. Thompson; B. Yadin; Z. J Grout; S. Hudziak; C. L. Kloc; N. J. Curson; O. Mitrofanov

doi:10.1117/12.893058

16 September 2011 Morphology of cleaved rubrene and its evolution in an ambient environment

R. J. Thompson, B. Yadin, Z. J Grout, S. Hudziak, C. L. Kloc, N. J. Curson, O. Mitrofanov

Proceedings Volume 8117, Organic Field-Effect Transistors X; 811712 (2011) https://doi.org/10.1117/12.893058
Event: SPIE Photonic Devices + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

R. J. Thompson, B. Yadin, Z. J Grout, S. Hudziak, C. L. Kloc, N. J. Curson, and O. Mitrofanov "Morphology of cleaved rubrene and its evolution in an ambient environment", Proc. SPIE 8117, Organic Field-Effect Transistors X, 811712 (16 September 2011); https://doi.org/10.1117/12.893058

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