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Photoemission study of chemisorption of C60 on InP(100)

Lookup NU author(s): Dr Yimin Chao, Professor Lidija Siller

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Abstract

The growth mode and electronic structure of C60 molecules adsorbed on InP(100) were studied by x-ray photoemission spectroscopy and ultraviolet photoemission spectroscopy as a function of coverage and annealing temperature. The C 1s, P 2p, In 4d core levels and the valence band photoemission spectra point to the presence of a localized covalent bond between the C60 molecules and the substrate. No filling of the lowest unoccupied molecular orbit derived bands was observed. The absence of any change in the surface components of the In 4d core level upon C60 adsorption indicates that the chemisorption bond exists between the fullerene molecules and P atoms rather than between C60 molecules and In atoms. This assertion is supported by the simultaneous desorption of both C60 and P upon annealing to 640 K and above.


Publication metadata

Author(s): Chao Y, Svensson K, Radosavkić D, Dhanak VR, Šiller L, Hunt MRC

Publication type: Article

Publication status: Published

Journal: Physical Review B - Condensed Matter and Materials Physics

Year: 2001

Volume: 64

Issue: 23

Pages: 2353311-2353316

ISSN (print): 0163-1829

ISSN (electronic): 1550-235X

Publisher: American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.64.235331

DOI: 10.1103/PhysRevB.64.235331


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