The growth of Cobalt oxides by reactive thermal evaporation of metallic Cobalt in an oxygen atmosphere on a series of oxide substrates, namely SiO2, Al2O3 and MgO, has been chemically and morphologically studied by means of XPS and atomic force microscopy (AFM). The XPS results reveal that cobalt oxide grows as CoO (Co) for coverages up to some tens of equivalent monolayers on all substrates. F...

The initial quality and stability in air of InAs(001) surfaces passivated by a weakly-basic solution of thioacetamide (CH3CSNH2) is examined by XPS. The S-passivated InAs(001) surface can be modeled as a sulfur-indium-arsenic ‘layer-cake’ structure, such that characterization requires quantification of both arsenic oxide and sulfur layers that are at most a few monolayers thick. This thickness ...

Zn nanoparticles were prepared by the inert-gas evaporation technique with induction heating method. Asprepared Zn particles were mixed with Na2S solution. ZnS nanoparticles were synthesized under ultrasonic radiation. They were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV spectrophotometry, and X-ray photoelectron spectrometry (XPS). XRD revealed that the ZnS ...

The surface composition of as-grown and annealed ZnO nanorods arrays (ZNAs) grown by a two-steps chemical bath deposition method has been investigated by Xray photoelectron spectroscopy (XPS). XPS confirms the presence of OH bonds and specific chemisorbed oxygen on the surface of ZNAs, as well as H bonds on 0) 1 (10 surfaces which has been first time observed in the XPS spectra. The experimenta...