Browsing 2005 by Subject "photoluminescence"

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  • About the green band nature in the PL spectra of ZnS:Al crystals annealed in Bi and Pb based melts 
    SUSHKEVICH, Konstantin; SOBOLEVSKAYA, Raisa; KOROTKOV, Vitalii; BRUK, Leonid; KETRUSH, Peter (Technical University of Moldova, 2005)
    The photoluminescence at 77K of ZnS and ZnS:Al single crystals annealed in the Pb, Pb+0,2wt% PbCl2, and Bi+1,5•10-3wt% Al melts was investigated. It is shown that during the annealing process in the near the surface region ...
  • Arsenic (III) oxide crystal obtained from technological waste: photoluminescence 
    BARANOV, Simion; REDWING, Joan; CINIC, Boris (Technical University of Moldova, 2005)
    Arsenic (III) oxide was obtained from vapor stream at processing technological waste in manufacturing of the gallium arsenide epitaxial structure. It has a cubic crystal structure, elementary cell a=11.05(4)Ǻ, Fd3m space ...
  • The capture and recombination levels energetic diagram in GaSe (Cu) stratified single crystals 
    CARAMAN, Mihail; EVTODIEV, Igor; CUCULESCU, Elmira (Technical University of Moldova, 2005)
    By studying PL spectra, as well photonductivity kinetics and spectral dependences, for different excitation (photon) energies in temperature range 78 K up to ~420 K, energies of localized states due to both Cu and ...
  • Exciton properties of nanoscale heterostrucrures AlxGa1-xN/GaN/AlxGa1-xN 
    NIKA, D. L.; POKATILOV, E. P.; FOMIN, V. M.; DEVREESE, J. T. (Technical University of Moldova, 2005)
    For the heterostructures AlxGa1-x N/GaN/AlxGa1-x N with different thicknesses of the GaN quantum wells and AlxGa1-xN barriers, we use an exciton model, which includes the interaction of an electron and a hole with deformations ...
  • Luminescence of ZnSe crystals grown with different vapor transport agents 
    ENACHE, M.; URSAKI, V. V.; RUSU, E. V.; TAZLAVAN, V. E.; SONTEA, V. P.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    In this paper we compare the luminescence properties of bulk ZnSe crystals grown by vapor transport method with different transport agents in order to establish the influence of the transport agent on the relation between ...

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