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No abstract available

[en] The results of structural studies of nucleation mechanisms of cadmium telluride islands on a substrate cooled to low temperatures (~ 77 K) have been discussed. Condensation curves, distribution functions, and micrographs of resulting structures are presented. A model is proposed that satisfactorily explains the experimental facts of nucleation of three-dimensional islands on poly molecular adsorbate layer due to the relaxation of its chemical energy. (author)

[en] The fluorescent K-bands, K-absorption spectra and Lsub(2, 3)-bands of phosphorus in ZnP₂ compounds (red and black modifications), Zn₃P₂, CdP₄, CdP₂ and Cd₃P₂ compounds are investigated. The method of self-coordinated fields of Xsub(α)-scattered waves is used to calculate the structure of energetic levels of clusters of Zn₃P₂ compounds and tetragonal ZnP₂. The comparison of calculation results with X-ray spectra has permitted to investigate in detail the distribution of electron states of different symmetry of various atoms in energies. The valent band structure reflects the presence of various sorts of of surroundings of phosphorus atoms in substances investigated. Width values of the forbidden zone, found according to X-ray spectra for most of compounds investigated agree well with the values obtained by other physical methods

[en] The band structure of Cd₃P₂ is presented on the basis of Bodnar's model which is extended by Wallace in presence of magnetic field. The oscillations of the Fermi level with magnetic field are calculated and it is found that the amplitude of the oscillations in Cd₃P₂ is larger than in Cd₃As₂. The effect of the so-called free-electron term is included in the calculation of the g-factor and cyclotron effective mass. The correction due to the free-electron term in the g-factor is smaller (g/sub f/ << 2) than anticipated and depends on energy. Another interesting result of the calculation is that there is linear relationship between cyclotron effective mass and energy. (author)

[en] Thermoreflectance spectra of semiconducting CdO single crystals at 100 degreeK with carrier concentrations in the range (2--40) x 10¹⁸/cm³ give 2.28 eV for the energy of the direct GAMMA₁₅-GAMMA₁ gap. Two indirect gaps are found: L₃-GAMMA₁ at 1.09 eV and Σ₃-GAMMA₁ at 0.84 eV. Theoretical calculations of the shape of the spectrum, taking explicitly into account the band-population effects, are in qualitative agreement with the experimental results. The spectra of sputtered films of CdO differ substantially from single-crystal spectra, suggesting structural differences between films and crystals

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[en] Possibility of cadmium telluride crystal alloying with silver at low temperatures was investigated. It was ascertained, that at electric field superposition, donor alloying may be carried out at 300 K. Such alloying makes it possible to change the Fermi level position without changing the intrinsic and impurity defect states. It is stressed, that silver and its alloys cannot operate as contact materials to samples of p-type cadmium telluride

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No abstract available