Showing papers in "Applied Surface Science in 1993"

TL;DR: In this article, the surface stoichiometry of SiO x thin films (x = 1-2) has been studied by means of X-ray photoelectron spectroscopy, and the presence of three Si oxidation states (SiO 2, SiO, Si 2 O 3 ) has been observed through an analysis of the Si2p line shape and the intensity variation of these different silicon oxide signals, as a function of the oxygen content.

TL;DR: In this paper, the chemical composition of the film is studied by X-ray photoelectron spectroscopy (XPS) analysis as a function of the DC bias voltage applied to the substrate.

TL;DR: In this article, the authors extended the conventional photoconductive decay lifetime measuring technique for the measurement of bulk lifetime maps on whole silicon wafers by the application of in situ chemical surface passivation.

TL;DR: In this paper, the Ca/P ratio and surface morphology of the films were related to deposition conditions, and it was shown that films that were amorphous (deposited either at room temperature or in a non-reactive gas environment) did not adhere well to the substrates.

TL;DR: In this article, a photoelectron spectroscopy of pyrite (FeS2) was performed before and after contact to air and air-saturated aqueous solutions.

TL;DR: XPS, DRIFTS, UV spectroscopy, and HPLC were used to investigate the nature and spatial distribution of oxidized superficial phases present on pyrite surfaces as discussed by the authors.

TL;DR: In this paper, the authors used scanning tunneling microscopy (STM) to study the oxidation of stepped (100) PbS surfaces in air over periods up to 270 min.

TL;DR: In this article, laser-induced forward transfer of tungsten (W) thin films by a focused Ar+ laser (λ=514 nm, 2w0=3μm) is shown.

TL;DR: In this article, anodized Ti surfaces exhibited a significantly more noble Ecorr compared to non-passivated and passivated Ti surfaces, with lower current densities observed for anodised Ti samples.

TL;DR: In this article, the lineshape of the Si 2p and Ti 2p peaks indicate that silicon and titanium are present as SiO2 and TiO2 oxide both for the starting and thermal-treated powders.

TL;DR: In this article, the dependence of oxidation rate on O2 concentration is approximately first order at low oxygen concentrations, with a saturation in the rate above 15 mol% O2, but significantly degrades the rate at higher concentrations.

TL;DR: In this article, the effect of post-deposition heat treatment on the electrical and optical properties of ITO films is investigated and several material parameters, such as the effective band gap and the refractive index, have been derived and discussed.

TL;DR: In this article, the observed effects of varying the surface potential, and hence the accompanying electrostatic fields, upon adsorbate bonding at ordered monocrystalline metals in electrochemical environments are summarized and discussed in comparison with field effects at related metal-vacuum interfaces for the specific case of carbon monoxide.

TL;DR: In this paper, results obtained by treating nickel and molybdenum oxides at a temperature of 523 K, at 10 -4 Pa (in vacuo) and at 10 5 PA (in hydrogen), are reported.

TL;DR: In this paper, the influence of post-deposition annealing at 573-1373 K on structural, electrical and optical properties of thin films of TiO2-x with a departure from stoichiometry x in the range from 0.08 to -0.2 was studied.

TL;DR: In this article, the optical transmittance, electrical conductivity, thermo-electric power, and grain size are influenced by the deposition temperature during evaporation, deviations from stoichiometry, and the annealing temperature and duration.

TL;DR: In this paper, the X-ray photoelectron spectroscopy (XPS) C(1s) spectra from heavy petroleum samples and model compounds were collected and the general intensity variation of electron emission in the energy region anticipated for II to II∗ shake-up peaks was recorded.

TL;DR: In this article, the authors review the existing knowledge, describe the thin films "peculiarities" and tentatively explain them taking into account the specificities of reactive diffusion and the role of the experimental conditions encountered in M-Si thin film reactions (low temperature, high density of interfaces, small thicknesses).

TL;DR: In this paper, the formation of Cu clusters in the early stage caused the inhomogeneity of the Fe concentration in the amorphous phase and this caused an increased density in the number of nucleation sites for the crystallization of the α-FeSi phase.

TL;DR: In this paper, the predicted depth resolution function for given materials and experimental conditions mainly depends on a detailed understanding of the physico-chemical processes during ion sputtering, and is mainly governed by the altered layer generated during sputtering and depends on ion beam characteristics (ion mass, ion energy and angle of incidence) as well as on thermochemical and atomic transport properties of the sample components.

TL;DR: In this paper, a spectral ellipsometer was designed and built specifically for adaptive control in single wafer processing, which is capable of precisely measuring thicknesses and compositions of multilayer structures in situ and in real time.

TL;DR: By absorption of a polarized excimer laser beam of low fluence, a new class of submicron laser induced structures is produced on various polymer surfaces as mentioned in this paper, where parallel ripples of less than 0.2 μm spacing in the direction of the electric field are obtained with the ArF or KrF radiation when it is strongly absorbed by the polymer.

TL;DR: The interaction of gaseous chlorine (Cl2) with a Au(111) single-crystal surface over the temperature range of 120-1000 K has been examined by using Auger electron spectroscopy (AES), X-ray and UV photoelectron spectroscopic (XPS and UPS), low-energy electron diffraction (LEED), temperature-programmed desorption (TPD), and work-function change (Δφ) measurements as discussed by the authors.

TL;DR: In an attempt to understand the fundamental ways in which molecules interact with metal-oxide surface, chemisorption has been studied on single-crystal oxide samples as discussed by the authors, which is determined both by the electronic configuration of surface cations and by the geometric structure of the surface.

TL;DR: In this article, X-ray photoelectron spectroscopy and scanning electron microscopy/energy-dispersive spectroscopic analysis of copper oxides, iron oxides and zinc copper ferrite desulfurization sorbents was performed at temperatures of 298 to 823 K.

TL;DR: In this article, a modular UHV multichamber PECVD system with characteristics which prevent both the incorporation of residual impurities and cross contamination between different layers is presented.

TL;DR: In this article, the generation of a surface plasmon wave at a palladium interface was used in the design of an all optical hydrogen sensor and large (>90%) changes in reflected light intensity from the sensor element were observed when the sensor is exposed to hydrogen concentrations corresponding to percentage levels.

TL;DR: In this article, the reduction behavior of co-precipitated Co3O4/CeO2 coprecipitate was examined using X-ray photoelectron spectroscopy.

TL;DR: In this paper, the surface potential of poly(ethylene terephthalate), polyimide, and polyethersulfone films has been investigated by measuring the surfaces potential on the films and the velocity distribution in ionic fragments.

TL;DR: In this article, a series of thin films of solid solutions of TiO2+xCr2O3 (0 < x < 0.013) and TiO 2+yNb2O5 ( 0 < y <0.05) were deposited on fused silica by means of reactive RF co-sputtering.