Browsing Conferinţe by Author "ZALAMAI, Victor"

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  • Electrochemical Nanostructuring of CuInS2 Bulk Crystals 
    MONAICO, Eduard; URSAKI, Veaceslav; ZALAMAI, Victor; MASNIK, Alisa; SYRBU, Nicolae; BURLACU, Alexandru (Technical University of Moldova, 2011)
    We show that chalcopyrite CuInS2 crystals can be nanostructured by electrochemical treatment in an aqueous HCl solution. In order the crystals to become suitable for electrochemical nanostructuring they are subjected to ...
  • Ground and Excited States of Excitons in GaSe Single Crystals 
    CRISTEA, Ecaterina; STAMOV, Ivan; ZALAMAI, Victor (Springer Nature Switzerland, 2023)
    In this work photoluminescence, reflection and absorption spectra of GaSe single crystals were studied in a wide temperature range (10 – 300 K). The presence of series of excitonic levels in the region E > Eg was shown. ...
  • Interband Optical Transitions in the Region of Excitonic Resonance in In0.3Ga0.7As/GaAs Quantum Wells 
    KAPON, Eli; MEREUŢA, Alexandru; DOROGAN, Andrei; DRAGUTAN, Nicolae; VIERU, Tatiana; SYRBU, Nicolae; ZALAMAI, Victor (Technical University of Moldova, 2011)
    Reflection spectra of In0.3Ga0.7As layers with 8nm thickness with quantum wells limited by GaAs barrier layer with 100nm thickness (bottom) and 9nm (upper) had been measured at S and P polarizations in the interval of ...
  • Morphology and Luminescence Properties of ZnO layers produced by Magnetron Spattering 
    RUSU, Emil; GHIŢU, Irina; PRILEPOV, Vladimir; ZALAMAI, Victor; URSAKI, Veaceslav (Technical University of Moldova, 2011)
    We show that the morphology and the luminescence properties of ZnO layers produced by magnetron sputtering can be controlled by technological parameters of sputtering, particularly by the ratio of argon to oxygen gases in ...
  • Properties of MoO3 Nanostructures Grown Via Thermal Oxidation 
    TROFIM, Viorel; CREŢU, Vasilii; LUPAN, Oleg; STAMOV, Ivan; SYRBU, Nicolae; ZALAMAI, Victor; CHOW, Lee (Technical University of Moldova, 2013)
    Metal oxides such as molybdenum oxide (MoO3) have been studied intensively as sensors and electrochromic systems during of the last decade. MoO3 nanowires present new properties at nanometer dimensions. Its structural, ...
  • Radiative Transitions in Sm2+ Doped ZnAl2Se4 and KCl Crystals 
    TIRON, Andrew; ZALAMAI, Victor; RUSU, Emil; SYRBU, Nicolae; BEJAN, Nicolae (Technical University of Moldova, 2017)
    Photoluminescence spectra of ZnAl2Se4:Sm2+ and KCl:Sm2+ due to the processes of charge carriers recombination from levels 5Dj,5Lj,5Gj and 5Hj (4f55d1) on levels 7Fj of samarium ions were investigated. The broad photoluminescence ...
  • Resonance Raman Scattering and Excitons Optical Orientation in CuGaSe2 Crystals 
    ZALAMAI, Victor; SYRBU, Nicolae; Tiron, Andrew; DOROGAN, Valerian (Technical University of Moldova, 2017)
    Resonance Raman and luminescence spectra of CuGaSe2 crystals measured at 9 K and excited by He-Ne (632.8 nm) and Ar+ (514.5 nm) lasers were investigated. Excitons parameters in the region of A, B and C excitonic series ...
  • Trends in Evolution of the Energy Band Structure of Chalcopyrite CuBIIIXVI2 Compounds with Variation of the B and X Compositions 
    MAŞNIC, Alisa; ZALAMAI, Victor; URSAKI, Veaceslav (Springer Nature Switzerland, 2023)
    Bulk and nanostructured AIBIIIXVI2 chalcopyrite materials, including quantum dots on their basis, are widely used in the development of optical filters, solar cells, optoelectronic devices and photocatalysis. Physical ...

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