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Observation of C60 film formation on a highly oriented pyrolitic graphite substrate via scanning tunnelling microscopy

Observation of C60 film formation on a highly oriented pyrolitic graphite substrate via scanning tunnelling microscopy

Szuba, S., Czajka, C., Kasuya, A., Wawro, A. and Rafii-Tabar, H. (1999) Observation of C60 film formation on a highly oriented pyrolitic graphite substrate via scanning tunnelling microscopy. Applied Surface Science, 144-5. pp. 648-652. ISSN 0169-4332 (doi:10.1016/S0169-4332(98)00887-3)

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Abstract

We have investigated the early stages in the adsorption process of C60 molecules on a highly oriented pyrolitic graphite (HOPG) substrate. C60 powder was thermally evaporated in UHV of 10−8 Pa conditions onto a freshly cleaved HOPG surface. We did not observe individual fullerenes on the substrate for the case of short deposition times and low evaporation rates. However, small islands of C60 molecules with an fcc structure could be observed when the deposition rate was about 0.2 nm/min and the total thickness was above 1 nm. The islands did not grow in the vicinity of the HOPG steps. The typical lateral dimensions of these islands were of the order of a few hundred square nanometers, having thickness of up to five monolayers. We modified the shapes and positions of these islands by the STM tip, using a small (less than 1 V) bias voltage.

Item Type: Article
Uncontrolled Keywords: fullerenes, scanning tunnelling microscopy, thin film growth
Subjects: Q Science > QA Mathematics
Q Science > QD Chemistry
Pre-2014 Departments: School of Computing & Mathematical Sciences
Related URLs:
Last Modified: 14 Oct 2016 08:59
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/291

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