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Study of the electronic structure at the interface between fluorene-1-carboxylic acid molecules and Cu(110). | LitMetric
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Study of the electronic structure at the interface between fluorene-1-carboxylic acid molecules and Cu(110).

Fei Song Hongying Mao Dandan Guan Weidong Dou Hanjie Zhang Haiyang Li Pimo He Philip Hofmann Shining Bao

J Phys Condens Matter

Physics Department, Zhejiang University, Hangzhou, 310027, People's Republic of China. Institute for Storage Ring Facilities and Interdisciplinary Nanoscience Center (iNANO), University of Aarhus, 8000 Aarhus C, Denmark.

Published: September 2009

The interface electronic properties of fluorene-1-carboxylic acid (FC-1) adsorbed on Cu(110) have been studied by ultraviolet photoemission spectroscopy (UPS) and first-principles calculations. Both the molecular orbitals and the Cu valence band are significantly modified upon adsorption. FC-1 is chemically bonded to Cu(110) through charge donation and back donation involving the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO) of the molecule. An observed reduction of the work function can be attributed to the adsorption induced charge redistribution, and the positive interface dipole.

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http://dx.doi.org/10.1088/0953-8984/21/35/355005DOI Listing

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