期刊
APPLIED PHYSICS LETTERS
卷 95, 期 4, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3189176
关键词
adsorption; elemental semiconductors; Fermi level; fullerenes; gold; interface states; organic semiconductors; Schottky barriers; semiconductor heterojunctions; semiconductor thin films; ultraviolet photoelectron spectra
资金
- Ontario Centres of Excellence and Natural Sciences and Engineering Research Council (NSERC) of Canada
The energy-level alignment and charge injection at metal/C-60/organic interfaces have been studied by ultraviolet photoelectron spectroscopy and temperature dependent current-voltage (IV) measurements. It is found that the Fermi level at the interface is pinned to similar to 4.7 eV by adsorbed C-60 molecules on the metal surface, resulting in more favorable energy level alignment for charge injection. The findings are in excellent agreement with interface dipole theory derived from traditional semiconductor physics.
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