期刊
APPLIED PHYSICS LETTERS
卷 95, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3238560
关键词
-
资金
- Nanoelectronic Research Initiative (NRI SWAN Center) [2006-NE-1464]
Deposition of Al2O3 and HfO2 dielectrics on graphite is studied as a route to the formation of a high-kappa dielectric on graphene. Electron beam evaporation of metal Al and Hf is followed by a separate oxidation step. Reactive e-beam deposition of HfO2 by introduction of O-2 to the deposition chamber is also demonstrated as an alternative to the two-step metal deposition and oxidation approach. We employ in situ x-ray photoelectron spectroscopy to study reactions between the substrate and deposited film and ex situ atomic force microscopy to examine the dielectric film morphology. (C) 2009 American Institute of Physics. [doi:10.1063/1.3238560]
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