In situ core-level and valence-band photoelectron spectroscopy of reactively sputtered tungsten oxide films

2016 ◽  
Vol 48 (7) ◽  
pp. 660-663 ◽  
Author(s):  
O. Bouvard ◽  
A. Krammer ◽  
A. Schüler
Keyword(s):  
Tungsten Oxide ◽  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Oxide Films ◽  
Core Level

Incorporation and Role of Nitrogen During Oxynitridation of Silicon Studied by Photoelectron Spectroscopy

1999 ◽  
Vol 567 ◽  
Author(s):  
Masayuki Suzuki ◽  
Yoji Saito
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Vacuum ◽  
Oxide Films ◽  
Silicon Surfaces ◽  
Gaseous Mixtures ◽  
X Ray ◽  
Initial Stage ◽  
Thermal Stability Of

ABSTRACTWe tried direct oxynitridation of silicon surfaces by remote-plasma-exited nitrogen and oxygen gaseous mixtures at 700°C in a high vacuum. The oxynitrided surfaces were investigated with in-situ X-ray photoelectron spectroscopy. With increase of the oxynitridation time, the surface density of nitrogen gradually increases, but that of oxygen shows nearly saturation behavior after the rapid increase in the initial stage. We also annealed the grown oxynitride and oxide films to investigate the role of the contained nitrogen. The desorption rate of oxygen from the oxynitride films is much less than that from oxide films. We confirmed that nitrogen stabilizes the thermal stability of these oxynitride films.

scholarly journals Probing surfaces and interfaces in complex oxide films via in situ X-ray photoelectron spectroscopy

2020 ◽  
pp. 1-26
Author(s):  
Suresh Thapa ◽  
Rajendra Paudel ◽  
Miles D. Blanchet ◽  
Patrick T. Gemperline ◽  
Ryan B. Comes
Keyword(s):  
Photoelectron Spectroscopy ◽  
Oxide Films ◽  
Complex Oxide ◽  
X Ray ◽  
Surfaces And Interfaces ◽  
Complex Oxide Films

Abstract

Improvement of reproducible resistance switching in polycrystalline tungsten oxide films by in situ oxygen annealing

2010 ◽  
Vol 96 (7) ◽  
pp. 072103 ◽  
Author(s):  
D. S. Shang ◽  
L. Shi ◽  
J. R. Sun ◽  
B. G. Shen ◽  
F. Zhuge ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Oxide Films ◽  
Resistance Switching ◽  
Oxygen Annealing ◽  
Polycrystalline Tungsten

Highly Sensitive Analysis for Valence Band Edge of C60 Films by Total Yield Photoelectron Spectroscopy

1994 ◽  
Vol 349 ◽  
Author(s):  
S. Gonda ◽  
M. Kawasaki ◽  
T. Arakane ◽  
H. Koinuma
Keyword(s):  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Total Yield ◽  
Kelvin Probe ◽  
Highly Sensitive ◽  
Gap States ◽  
Kelvin Probe Method ◽  
C60 Films ◽  
Simple Picture

ABSTRACTWe have in-situ measured the density of states (DOS) around the top of valence band of pristine C60 films by means of total yield photoelectron spectroscopy. The top of valence band (TVB) of C60 was located at 5.00eV below the vacuum level. Considerable amplitude of gap states was observed up to 0.9eV above the TVB. Kelvin probe method revealed that the Fermi level of amorphous C60 film was located at 0.47eV above the TVB. The improvement of crystallinity in C60 films, which induced the increase in electrical conductivity as well, increased the DOS above the TVB. The electric conduction of C60 films cannot be explained with a simple picture for carrier conduction in semiconductors.

scholarly journals Влияние адсорбции атомов натрия и прогрева на наночастицы золота, адсорбированные на вольфраме

2020 ◽  
Vol 62 (8) ◽  
pp. 1171
Author(s):  
П.А. Дементьев ◽  
Е.В. Иванова ◽  
М.Н. Лапушкин ◽  
Д.А. Cмирнов ◽  
С.Н. Тимошнев
Keyword(s):  
Gold Nanoparticles ◽  
Electronic Structure ◽  
Energy Range ◽  
Surface Topography ◽  
Valence Band ◽  
Photoelectron Spectroscopy ◽  
Sodium Atoms ◽  
Before And After ◽  
Tungsten Surface

The electronic structure of gold nanoparticles deposited on the surface of tungsten before and after the adsorption of sodium atoms followed by heating at T = 630 K was studied in situ in ultrahigh vacuum by photoelectron spectroscopy. The photoemission spectra from the valence band and core levels of Au 4f and Na 2p were studied under synchrotron excitation in the photon energy range 80-600 eV. It was shown that changes in the spectra of the valence band and core levels of Au 4f and Na 2p are associated with a change in the surface topography caused by the adsorption of sodium atoms and heating, which led to an increase in the surface area by several times. The surface topography and cathodoluminescence of a layer of gold nanoparticles deposited on a tungsten surface are studied

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