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Electrospray deposition of fullerenes in ultra-high vacuum: in situ scanning tunneling microscopy and photoemission spectroscopy

Christopher J Satterley1, Luís M A Perdigão1, Alex Saywell1, Graziano Magnano1, Anna Rienzo1, Louise C Mayor1, Vinod R Dhanak2, Peter H Beton1 and James N O'Shea1

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Electrospray deposition of fullerenes on gold has been successfully observed by in situ room temperature scanning tunneling microscopy and photoemission spectroscopy. Step-edge decoration and hexagonal close-packed islands with a periodicity of 1 nm are observed at low and multilayer coverages respectively, in agreement with thermal evaporation studies. Photoemission spectroscopy shows that fullerenes are being deposited in high purity and are coupling to the gold surface as for thermal evaporation. These results open a new route for the deposition of thermally labile molecules under ultra-high vacuum conditions for a range of high resolution surface science techniques.


Footnote
*  Surface Science Research Centre, University of Liverpool, UK
PACS

81.15.Pq Electrodeposition, electroplating

68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)

68.47.De Metallic surfaces

79.60.Dp Adsorbed layers and thin films

61.48.-c Structure of fullerenes and related hollow molecular clusters

81.15.Ef Vacuum deposition

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Condensed matter: structural, mechanical & thermal

Dates

Issue 45 (14 November 2007)

Received 6 August 2007, in final form 13 September 2007

Published 10 October 2007



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