Interaction of Pt Films With ZnO(0001) and ZnO(0001)

1994 ◽  
Vol 357 ◽  
Author(s):  
W.T. Petrie ◽  
J.M. Vohs
Keyword(s):  
Low Energy ◽  
Layer By Layer ◽  
Electronic Interactions ◽  
Low Energy Electron Diffraction ◽  
Growth Structure ◽  
Barrier Formation ◽  
Resolution Electron ◽  
Low Energy Electron ◽  
Pt Films ◽  
Electron Energy Loss

AbstractThe growth, structure, and electronic properties of Pt films supported on the (0001) and (0001) surfaces of ZnO were investigated using high-resolution electron energy-loss spectroscopy (HREELS) and low-energy electron diffraction (LEED). Vapor-deposited Pt films were found to grow in a layer-by-layer fashion on both surfaces and exhibited hexagonal LEED patterns. HREELS results indicate that there are only weak electronic interactions at the Pt/ZnO(0001) interface, while charge transfer and Schottky barrier formation occurs at the Pt/ZnO(0001) interface.

Hydrogen On Semiconductor Surfaces

1998 ◽  
Vol 513 ◽  
Author(s):  
J. A. Schaefer ◽  
T. Balster ◽  
V. Polyakov ◽  
U. Rossow ◽  
S. Sloboshanin ◽  
...  
Keyword(s):  
High Resolution ◽  
Electron Diffraction ◽  
Photoelectron Spectroscopy ◽  
Low Energy ◽  
Semiconductor Surfaces ◽  
Hydrogen Passivation ◽  
Low Energy Electron Diffraction ◽  
Resolution Electron ◽  
Low Energy Electron ◽  
Electron Energy Loss

ABSTRACTWe review structural and electronic aspects of the reaction of hydrogen with semiconductor surfaces. Among others, we address the Si(100), GexSi1-x(100), GaAs(100), InP(100), SiC(100), SiC(0001) and SiC(0001) surfaces. It is demonstrated that high resolution electron energy loss spectroscopy (HREELS) in conjunction with a number of other surface sensitive techniques like low energy electron diffraction (LEED) and photoelectron spectroscopy (XPS/UPS) can yield important information about the surface atomic structure, the effects of hydrogen passivation and etching and on electronic properties of the surfaces.

Adsorption of Oxygen on Sodium Saturated Cu{110}

1986 ◽  
Vol 83 ◽  
Author(s):  
D. E. Grider ◽  
J. F. Wendelken
Keyword(s):  
Photoelectron Spectroscopy ◽  
Low Energy ◽  
Sticking Coefficient ◽  
X Ray ◽  
Low Energy Electron Diffraction ◽  
Metallic Character ◽  
Resolution Electron ◽  
Initial Oxygen ◽  
Low Energy Electron ◽  
Electron Energy Loss

ABSTRACTThe adsorption of oxygen on a sodium saturated Cu{110} surface is examined with x-ray photoelectron spectroscopy (XPS) in an extension of a previous study of this system which utilized low energy electron diffraction (LEED), and high resolution electron energy loss spectroscopy (HREELS). The sodium overlayer, despite the presence of an initial oxide contaminant, shows metallic character. Intentionally adsorbed oxygen is in a different chemical state than the initial oxygen contaminant and causes a reduction in the metallic character of the sodium. The sticking coefficient for oxygen on the sodium saturated surface is almost three times greater than for the bare Cu{11O} surface.

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