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Issue 44, 2010

Stranski-Krastanov growth of para-sexiphenyl on Cu(110)–(2×1)O revealed by optical spectroscopy

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Abstract

We have studied the growth of para-sexiphenyl (p-6P) on the Cu(110)–(2×1)O surface using reflectance difference spectroscopy (RDS) in combination with scanning tunneling microscopy (STM). The evolution of the optical anisotropy reveals that the growth of p-6P on the Cu(110)–(2×1)O surface at room temperature follows the Stranski-Krastanov growth mode with a two monolayer thick wetting layer. During all stages of growth, the p-6P molecules are well orientated with their long molecular axis aligned parallel to the Cu–O rows along the [001] direction of the Cu(110) substrate. The high packing density of the p-6P molecules in the first and second monolayer evidenced by RDS and STM is believed to be responsible for the switch from layer-by-layer to three-dimensional island growth.

Graphical abstract: Stranski-Krastanov growth of para-sexiphenyl on Cu(110)–(2×1)O revealed by optical spectroscopy

Article information


Submitted
04 May 2010
Accepted
03 Aug 2010
First published
13 Oct 2010

Phys. Chem. Chem. Phys., 2010,12, 14706-14709
Article type
Paper

Stranski-Krastanov growth of para-sexiphenyl on Cu(110)–(2×1)O revealed by optical spectroscopy

L. Sun, G. Weidlinger, M. Denk, R. Denk, M. Hohage and P. Zeppenfeld, Phys. Chem. Chem. Phys., 2010, 12, 14706 DOI: 10.1039/C0CP00443J

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