Copper deposition on TiO{sub 2} from copper(II)hexafluoroacetylacetonate

Journal Article · Tue Jan 15 00:00:00 EST 2013 · Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films

DOI:https://doi.org/10.1116/1.4765644· OSTI ID:22099151

Rayner, David G.; Mulley, James S.; Bennett, Roger A. ^[1]

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1. Department of Chemistry, University of Reading, Reading RG66AD (United Kingdom)

The authors have studied the adsorption of Cu{sup II}(hfac){sub 2} on the surface of a model oxide system, TiO{sub 2}(110), and probed the molecular stability with respect to thermal cycling, using atomic scale imaging by scanning tunneling microscopy supported by x-ray photoemission spectroscopy. They find that at 473 K, the adsorbed metal-organic molecules begin to dissociate and release Cu atoms which aggregate and form Cu nanoparticles. These Cu nanoparticles ripen over time and the size (height) distribution develops into a bimodal distribution. Unlike other organometallic systems, which show a bimodal distribution due to enhanced nucleation or growth at surface step edges, the nanoparticles do not preferentially form at steps. The reduced mobility of the Cu islands may be related to the co-adsorbed ligands that remain in very small clusters on the surface.

• OSTI ID: 22099151
• Journal Information: Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films, Vol. 31, Issue 1; Other Information: (c) 2013 American Vacuum Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0734-2101
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
COPPER
COPPER COMPOUNDS
CRYSTAL GROWTH
DEPOSITION
MOBILITY
NANOSTRUCTURES
NUCLEATION
ORGANOMETALLIC COMPOUNDS
PHOTOEMISSION
SCANNING TUNNELING MICROSCOPY
STABILITY
SURFACES
THERMAL CYCLING
TITANIUM OXIDES
X-RAY PHOTOELECTRON SPECTROSCOPY