1 - 10 of 23 articles
The available phase-diagram data for the Cu-Se system are critically evaluated, and theT-x andp-T phase diagrams are optimized. The thermodynamic properties and polymorphism of copper selenides are analyzed.
The spectral response of the photocurrent through Se-dopedCd
single crystals was studied. The results were used to determine the band gap at absolute zero (0.540 eV) and the temperature coefficient of band gap (-0.39 meV/K). The photocurrent spectra were found to contain a...
Data are presented on the structure and photoelectric properties of lead sulfide films chemically deposited from aqueous solutions containing ammonium halides. The concentration of ammonium halides in the solution has a crucial effect on the microstructure and texture of the films. The...
Crystals of Cu
In5S8 solid solutions were grown by directional solidification and the Bridgman-Stockbarger technique. The crystals were characterized by chemical and x-ray diffraction analyses. The lattice parameters, density, and microhardness of the solid solutions were measured. The...
Polytropy of Group IV and VI dopants in bismuth crystals was revealed. The crystals doped with Sn and Pb were found to contain eutectic inclusions. The dopant atoms present in the inclusions exhibited insignificant electrical activity, as evidenced by specimen-current imaging.
Zinc telluride transport in the ZnTe-NH4I system under various temperature conditions was studied experimentally and theoretically, using a one-dimensional diffusion model. The dependences of the ZnTe flow rate on the NH4I concentration (0.05-0.5 mg/cm3), the deposition-zone temperature, and the...
The electrical conductivity, thermoelectric power, and thermal conductivity of Bi2Te3-Sb2Te3 crystals grown by the floating-crucible technique were measured in the temperature range from 100 to 700 K. The thermoelectric figure of merit of the crystals was evaluated. The effect of crystal...
Bi0.5Sb1.5Te3 crystals, undoped and doped with 4 mol % Bi2Se3, were grown by the floating-crucible technique, using starting materials of 99.9999 or 99.99% purity. The perfection of the crystals (mosaic blocks, second-phase inclusions, dislocation density) was correlated with growth conditions....
Mathematical modeling was used to examine vacancy migration in Ag and Al films during pulsed laser annealing at different pulse durations and incident power densities. The results demonstrate that, during pulsed laser processing of fcc-metal films containing nonequilibrium initial vacancy...
Using experimental data for metals, silicon, and antimony, the preexponential factor in the equation for the self-diffusion coefficient,D = D
0exp(-E/RT), is related to the atomic weight, atomic radius, density, fusion temperature, and fusion entropy of elements. The relation obtained allows Do...
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