IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Conferinţa "Microelectronics and Computer Science" by Subject "photoluminescence"

Browsing Conferinţa "Microelectronics and Computer Science" 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 ...
  • Absorption and Emission Spectra of Ga0.017Ge0.25As0.083S0.65 Glasses Doped with Dy3+ 
    LUPAN, Elena; CIORNEA, Viorel; IOVU, Mihail (Technical University of Moldova, 2009)
    The absorption spectra in the visible and near IR regions for Ga0.017Ge0.25As0.083S0.65 are investigated. The visible luminescence from Dy3+, and co-doped with Ho3+ and Dy3+ ions embedded in Ga0.017Ge0.25As0.083S0.65 glass ...
  • 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 ...
  • The effects of deposition potential and H2O2 concentration on electrochemically grown ZnO 
    BURLACU, Alexandru (Technical University of Moldova, 2009)
    This paper presents the results of electrochemical deposition of zinc oxide (ZnO) on zinc foil from zinc nitrate, zinc sulfate and hydrogen peroxide solutions. The equations of the chemical reactions taking place are ...
  • 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 ...
  • Optical characterization of Mo1−xWxS2 single crystals 
    DUMCENCO, Dumitru; HUANG, Ying-Sheng; HO, Ching-Hwa; COLEV, Andrei; GHERMAN, Cornel; KULYUK, Leonid; TIONG, Kwong-Kaw (Technical University of Moldova, 2009)
    A systematic optical study of Mo1-xWxS2 single crystals grown by the chemical vapor transport method in a wide range composition (0 ≤ x ≤ 1) is presented. The optical characterization was carried out using piezoreflectance ...
  • Photoluminescence of hydrogenated nanocrystalline silicon films 
    EMELYANOV, Andrey; KAZANSKII, Andrey; FORSH, Pavel; ZHIGUNOV, Denis; KHENKIN, Mark; KASHKAROV, Pavel (Tehnica UTM, 2014)
    We have studied structural, electrical and photoluminescence properties of hydrogenated nanocrystalline silicon films with different crystalline volume fractions (from 0 – pristine amorphous silicon – to 55 %). The ...
  • Sinteza şi proprietăţile optice ale soluţiilor coloidale de nanocristalele de PbS 
    MITIOGLU, Anatolie; GAVRILUŢA, Anatolie; LASCOVA, Renata; GHERMAN, Cornel (Technical University of Moldova, 2009)
    The peculiarities of photoluminescence (PL) and optical absorption spectra of PbS nanocrystals (NC) were investigated. The PbS NCs were obtained in chloroform as well as aqueous colloidal solutions using different technologic ...
  • Synthesis and luminescent properties of ligand-Europium(III) Coordination Compounds 
    VERLAN, V. I.; BORDIAN, O. T.; IOVU, M. S.; CULEAC, I. P.; ZUBAREVA, V. E.; MALAHOV, L.A. (Technical University of Moldova, 2017)
    We propose a new technology for preparation of luminescent coordination organic compounds (COC) with Eu3+ ions with down- conversion of light and extended absorption spectral response to UV. The optimal ionic and neutral ...

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