Characterization of tin oxides by x-ray-photoemission spectroscopy

1992 ◽  
Vol 46 (4) ◽  
pp. 2460-2466 ◽  
Author(s):  
Jean-Marc Themlin ◽  
Mohammed Chtaïb ◽  
Luc Henrard ◽  
Philippe Lambin ◽  
Jacques Darville ◽  
...  
Keyword(s):  
Photoemission Spectroscopy ◽  
X Ray ◽  
Tin Oxides

Synthesis and characterization of TiN / Ti / AISI 410 coatings

2018 ◽  
Vol 2 (1) ◽  
pp. 7
Author(s):  
S Chirino ◽  
Jaime Diaz ◽  
N Monteblanco ◽  
E Valderrama
Keyword(s):  
Synthesis And Characterization ◽  
Photoemission Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Columnar Grains ◽  
Tin Thin Films ◽  
Steel Aisi ◽  
Interacting Surfaces ◽  
Stainless Steel Aisi

The synthesis and characterization of Ti and TiN thin films of different thicknesses was carried out on a martensitic stainless steel AISI 410 substrate used for tool manufacturing. The mechanical parameters between the interacting surfaces such as thickness, adhesion and hardness were measured. By means of the scanning electron microscope (SEM) the superficial morphology of the Ti/TiN interface was observed, finding that the growth was of columnar grains and by means of EDAX the existence of titanium was verified.  Using X-ray diffraction (XRD) it was possible to observe the presence of residual stresses (~ -3.1 GPa) due to the different crystalline phases in the coating. Under X-ray photoemission spectroscopy (XPS) it was possible to observe the molecular chemical composition of the coating surface, being Ti-N, Ti-N-O and Ti-O the predominant ones.

scholarly journals Characterization of Charge States in Conducting Organic Nanoparticles by X-ray Photoemission Spectroscopy

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2058
Author(s):  
Jordi Fraxedas ◽  
Antje Vollmer ◽  
Norbert Koch ◽  
Dominique de Caro ◽  
Kane Jacob ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Chemical Shifts ◽  
Large Family ◽  
Photoemission Spectroscopy ◽  
Intrinsic Structure ◽  
X Ray ◽  
Level Lines ◽  
Donor And Acceptor ◽  
Electronic Configurations

The metallic and semiconducting character of a large family of organic materials based on the electron donor molecule tetrathiafulvalene (TTF) is rooted in the partial oxidation (charge transfer or mixed valency) of TTF derivatives leading to partially filled molecular orbital-based electronic bands. The intrinsic structure of such complexes, with segregated donor and acceptor molecular chains or planes, leads to anisotropic electronic properties (quasi one-dimensional or two-dimensional) and morphology (needle-like or platelet-like crystals). Recently, such materials have been synthesized as nanoparticles by intentionally frustrating the intrinsic anisotropic growth. X-ray photoemission spectroscopy (XPS) has emerged as a valuable technique to characterize the transfer of charge due to its ability to discriminate the different chemical environments or electronic configurations manifested by chemical shifts of core level lines in high-resolution spectra. Since the photoemission process is inherently fast (well below the femtosecond time scale), dynamic processes can be efficiently explored. We determine here the fingerprint of partial oxidation on the photoemission lines of nanoparticles of selected TTF-based conductors.

Characterization of GaAs Surface State by Hard X-ray Photoemission Spectroscopy

2014 ◽  
Author(s):  
Y. Saito ◽  
J. Iihara ◽  
T. Yonemura ◽  
K. Yamaguchi ◽  
D. Tsurumi
Keyword(s):  
Surface State ◽  
Gaas Surface ◽  
Photoemission Spectroscopy ◽  
X Ray

Characterization of SiNx/GaxIn1-xAs Interface using Hard X-ray Photoemission Spectroscopy

2007 ◽  
Vol 46 (9A) ◽  
pp. 5771-5773 ◽  
Author(s):  
Yoshihiro Saito ◽  
Motonori Nakamura ◽  
Atsushi Kimura ◽  
Koji Yamaguchi ◽  
Masashi Ito
Keyword(s):  
Photoemission Spectroscopy ◽  
X Ray

scholarly journals Photoemission Spectroscopy Characterization of Attempts to Deposit MoO2Thin Film

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Irfan ◽  
Franky So ◽  
Yongli Gao
Keyword(s):  
Thermal Evaporation ◽  
Substantial Reduction ◽  
Oxidation States ◽  
Photoemission Spectroscopy ◽  
Xps Analysis ◽  
Interface Formation ◽  
Molybdenum Dioxide ◽  
X Ray ◽  
Chloroaluminum Phthalocyanine

Attempts to deposit molybdenum dioxide (MoO2) thin films have been described. Electronic structure of films, deposited by thermal evaporation of MoO2powder, had been investigated with ultraviolet photoemission and X-ray photoemission spectroscopy (UPS and XPS). The thermally evaporated films were found to be similar to the thermally evaporated MoO3films at the early deposition stage. XPS analysis of MoO2powder reveals presence of +5 and +6 oxidation states in Mo 3d core level along with +4 state. The residue of MoO2powder indicates substantial reduction in higher oxidation states while keeping +4 oxidation state almost intact. Interface formation between chloroaluminum phthalocyanine (AlPc-Cl) and the thermally evaporated film was also investigated.

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