Tunneling electron induced chemisorption of copper phthalocyanine molecules on the Cu(111) surface

Journal Article · Mon Feb 17 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4866283· OSTI ID:22283111

Stock, T.; Nogami, J. ^[1]

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1. Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario M5S 3E4 (Canada)

The adsorption of up to one monolayer (ML) of copper phthalocyanine (CuPc) molecules on a room temperature Cu(111) surface has been studied using scanning tunneling microscopy (STM). Below 1 ML the molecules are in a fluid state and are highly mobile on the surface. At 1 ML coverage the molecules coalesce into a highly ordered 2D crystal phase. At sub-ML coverages, chemisorption of individual CuPc molecules can be induced through exposure to tunneling electrons at a tunneling bias voltage exceeding a threshold value. This tunneling electron induced effect has been exploited to perform molecular STM lithography.

• OSTI ID: 22283111
• Journal Information: Applied Physics Letters, Vol. 104, Issue 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
CHEMISORPTION
COPPER
COPPER COMPLEXES
COPPER COMPOUNDS
CRYSTAL STRUCTURE
CRYSTALS
ELECTRIC POTENTIAL
ELECTRONS
LAYERS
MOLECULES
PHTHALOCYANINES
SCANNING TUNNELING MICROSCOPY
SURFACES
TEMPERATURE RANGE 0273-0400 K
TUNNEL EFFECT