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The objective of this work was to investigate how cobalt oxide doped coatings in the form of thin films could affect the electrical response of silicon (Si) solar cells. Spin coated thin films consisting of a polymeric solution of cobalt oxide-antimony doped tin oxide (CoO-ATO) were used as coatings on 3" × 6" Si solar cells. Based on the spectral response of CoO-ATO, it is hypothesized...
The thermal stability of CoSi2 layers on P-doped polycrystalline Si was investigated. It was observed that the additional Ge+ implant is performed prior to Co sputtering can suppress the CoSi2 agglomeration behavior. The samples with Ge+ implant at 50KeV implanted energy and more than or equal to the dose of 2E15 ions/cm2 show that the agglomeration of CoSi2 film is completely suppressed during high...
The binding energies of Si 2p, Fe 3p, Co 3p and Mn 3p core-shell electrons have been determined for a number of 3d-metall silicides (Fe3Si, ε-FeSi, β-FeSi2, Co3Si, Co2Si, CoSi, CoSi2, MnSi and MnSi1.7) using high-resolution photoelectron spec-troscopy with synchrotron radiation. The silicides were formed by solid-state epitaxy under identical conditions on Si(100) and Si(111) faces of silicon single...
This paper describes growth process of the two silicide Sub-nanometer devices and the different effects of having cobalt silicide and titanium silicide on a Sub-nanometer CMOS devices. On the top of CMOS device gate, metal silicide is developed on-top of the polysilicon to produce an ohmic contact between the polysilicon and aluminum wire. The ohmic contact should be better compared to metal-polysilicon...
This paper reports gamma irradiation effects on the resistance of polycrystalline silicon beams in MEMS. Co60 irradiation test was performed to reveal mechanisms underlying radiation effects. Changes of the resistances have been measured by Semiconductor Characterization Instruments. The mechanisms of gamma irradiation effects on the resistance of polycrystalline silicon were discussed in detail....
A new type of crystal seed, polycrystalline Ge (poly-Ge) formed by Co induced crystallization was used in the rapid-melting-growth (RMG) of Ge. With the poly-Ge seed, the grain size of Ge films obtained was significantly larger than the one using single crystal epitaxial Si as crystal seed and the one without any crystal seed. High quality (almost single crystal) Ge was obtained on 1 mm × 1 mm square...
The diffusion barrier properties of Co/TaN bilayer as Cu adhesion layer/diffusion barrier on the Si and low k (k = 2.5) substrates were investigated. The barrier was prepared by using ion-beam sputtering technique. The barrier property was investigated by sheet resistance, X-ray diffraction (XRD), and Auger electron spectroscopy (AES) and electrical measurements. No obvious Cu diffusion and agglomeration...
Detection and spectroscopic tests of three self-triggered silicon detection modules constructed using Tape Automated Bonding and micro-cable technologies and equipped by VATA read-out chips are presented and compared. Results of these tests are demonstrated using hit maps and pulse-height spectra induced by 133Ba, 241Am, and 57Co radioactive sources of X- and gamma rays. We have observed significant...
Electrodeposited Co-P thin film has recently attracted a lot attention due to its good high-frequency performance, large magnetic susceptibility, relatively high resistivity and growth rate. Co-P soft magnetic films can be synthesized by either direct current or pulse current plating. The effects of the pulse current on the properties of the electrodeposited Co-P film have not been fully investigated...
The ion adsorption of cobalt (2+) on the oxide sorbents with different concentrations of the ions of Co2+ and pH has been experimentally studied. The acid-base model of adsorption, which makes it possible to optimize the technological regimes of the adsorption of Co2+ on the inorganic sorbents (Co2O3, TiO2, Fe2O3, Fe3O4, SiO2 and other) has been proposed. The special feature of model is calculation...
Results of investigations of ferromagnetic nanostructures enclosing the monolayer ferromagnetic nanodisks of various forms as well as multilayer ferromagnetic nanomagnets are presented. Methods of magnetic force microscopy were applied to observe magnetic states in such nanosystems. We have produced the spin-valve elements on the basis of CoFe/AlOx/CoFe, which perform the 10% alteration of the effect...
Back-propagation artificial neural network was developed to study the relationship between the aging rates of capacity in Ni/H battery and alloying elements of cathode materials. Leave-one out method was used to train the ANN model. Test results showed that the prediction performance of the ANN model is satisfactory: the scatter dots distribute along the 0__45??diagonal line in the scatter diagram,...
Field electron emitters are made from these materials: 3D materials, like in metals e.g. W, Mo and in metal compounds HfC3, W/C4, Co/C5, are applied as electron sources in transmission electron microscopes TEM, scanning electron microscopes SEM, and signal amplifier tubes. Technical applications longed for long lasting emitters, which are found using a 2D emitter Zr-O-W. Other 2D emitters are searched...
With device scaling, the introduction of emerging materials including nanowires and nanodots is required more than ever. We present several examples of making nanomaterials based on advanced thin film deposition techniques including atomic layer deposition, supercritical fluid deposition (SCFD), and selective epitaxial growth (SEG), and nanohybrid process utilizing self-assembled nano-template. Metallic...
The paper presents upper and lower limitations of nominal radius of liquid drops for rolling along an inclination by considering specified dimensionless Bond number, gravitational force, and Gibbs free energy. The relations between the Bond number and Gibbs free energy are established in this paper to determine the region of nominal radius of seeding droplets and the conditions of rolling mechanism...
Single-walled carbon nanotubes (SWCNTs) are one of the most interesting alternatives to indium tin oxide for the fabrication of transparent conductive films. SWCNT percolating networks have been produced by a variety of different methods, mainly by spraying or filtration of solutions, but, unfortunately, suspending CNTs in liquid requires the use of ultrasound and surfactants. While sonication reduces...
Single-walled carbon nanotubes (SWCNTs) were grown by ethanol chemical vapor deposition (ECVD) and growth parameters were optimized using the Taguchi optimization technique. Optimized parameters such as catalyst, spin coating speed, temperature and flow rate of carrier gas are found to be cobalt (Co) and 5% nickel (Ni), 2000 rpm, 900??C, and 100 sccm (argon and 5% hydrogen), respectively. SWCNTs obtained...
The magneto-transport properties of ferromagnetic based multilayers are dependent on the film thickness, the surface roughness, the nature of the interlayer and pining layer used for exchange biasing. We investigate how the nature of the spacer-layer affects the magnetoresistance and Hall effect properties of the magnetic multilayers. The effective thicknesses of the oxide layers were estimated by...
This paper reviews recent experimental confirmations that the intrinsic radiation robustness of commercial CMOS technologies naturally improves with the down-scaling. When additionally using innovative design techniques, it becomes now possible to assure that performance and radiation-hardness are both met. An illustration is given with an original nano-power and radiation-hardened 8 Mb SRAM designed...
We have studied spin-dependent transport across magnetic metallic strips deposited on doped Si and GaAs in a wide range of temperatures up to the ambient temperature, and found strong evidence of coherent spin transport through the magnetic metal into the semiconductors at the elevated temperatures. First, spin transport through Si doped GaAs was studied between two cobalt strips separated by a 100...
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