Articole ştiinţifice: Recent submissions

  • Superimposed diffraction gratings formed by e-beam recording in chalcogenide films 
    ANDRIESH, A. M.; AKIMOVA, E. A.; ENAKI, M. A.; SERGEEV, S. A.; TRIDUH, G. M. (Institutul de Fizică Aplicată al AŞM, 2012)
    It was established, that at low values of recording current the independent superimposition (without reciprocal effect) of crossed index gratings can be occurred. Contrary to this, in the case of the relief structures the ...
  • VCSEL study for gas sensing usage 
    VIERU, T.; DOROGAN, A.; VIERU, S.; DOROGAN, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    The studied VCSEL device structure had been manufactored at Ecole Polytechnique Fédérale de Lausanne, Laboratory of Physics of Nanostructures in the framework of the SCOPES project. The LIV characteristics of VCSEL chips ...
  • Photoluminescent thin films with nanostructured surface 
    ANDRIESH, A. M.; IOVU, M. S.; CULEAC, I. P.; NISTOR, Iu. H.; ROBU, Şt.; DRAGALINA, G.; POPUŞOI, A.; MITCOV, D.; ENACHE, M.; PETRENKO, P. (Institutul de Fizică Aplicată al AŞM, 2012)
    We present here experimental results on polymer-inorganic nanocomposite material made of styrene with butyl methacrylate (SBMA) with isothiocyanato-chalcone (ITCC) and inorganic semiconductor CdS. Styrene with butyl ...
  • Excitonic resonance spectra in QW and QD In0.3Ga0.7As/GaAs hetrostructures 
    DOROGAN, A.; DOROGAN, V.; MEREUTA, A.; SYRBU, A.; SYRBU, N.; VIERU, T.; URSAKI, V.; ZALAMAI, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    The measurement of optical reflection and transmittance spectra had been carried out using MДР-2, JASCO-670 and СДЛ-1 spectrometers at 10K and 300K for S- and P-polarizations and different light angles incident on the ...
  • Light emission in ZnO nanostructures 
    ZALAMAI, V. V. (Institutul de Fizică Aplicată, AŞM, 2018)
    Zinc oxide is a wide gap semiconductor material on his base are produced white and blue LED and lasers. Also zinc oxide is perspective and promising material for application in optoelectronics, nanoelectronics, photonics, ...
  • Quantum wells parameters of In0,3Ga0,7As/GaAs VCSEL lasers 
    DOROGAN, A.; DOROGAN, V.; MEREUTA, A.; SYRBU, A.; SYRBU, N.; VIERU, T.; URSAKI, V.; ZALAMAI, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    Injection lasers based on quantum well (QW) and quantum dots (QD) heterostructures with a low value of threshold current density Jth with continuous emission regime and output power value of 3W have been manufactured. VCSEL ...
  • Homogenization of the nanomodified concrete mixture in the magneto fluidized layer 
    GONCIARUC, V. P.; BOLOGA, M. K.; RUSU, I. V.; POLICARPOV, A. A.; VRABIE, E. Gh.; SPINU, V. V. (Institutul de Fizică Aplicată, AŞM, 2018)
    Recently, nanotechnologies are beginning to be widely used in construction, which are aimed primarily at improving the quality of mineral binders and, above all, Portland cement. Two directions are observed: the first ...
  • Thermoelectric figure of merit of (111) oriented PbTe/Pb 1-xEu xTe double quantum well structure 
    SUR, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    In present report, the thermoelectric opportunities of n - PbTe/Pb1-x Eux Te DQW were estimated theoretically. The model of DQW with rectangular confinement potential oriented parallel to (111) plane, was considered. ...
  • Absorption and photoluminescence in wulfenit (PbMoO4) crystals 
    MUSINSCHI, V.; MUSINSCHI, C. (Institutul de Fizică Aplicată al AŞM, 2012)
    The interest to the study of optical properties of PbMoO4 crystals is determined not only by fundamental physical mechanism present in this material, but also by a wide spectrum of possible applications in high speed ...
  • Reflectivity spectra of Cu2ZnSnSe4 
    BODNAR, I.; DERMENJI, L.; GUC, M.; LEVCENCO, S.; ARUSHANOV, E.; SYRBU, N. N. (Institutul de Fizică Aplicată al AŞM, 2012)
    Thin film solar cells of Cu2ZnSnSe4 with efficiency exceeding 9 % have been fabricated so far. In this paper we present reflectivity spectra measured at 300 K in the photon energy range of 1.5 - 6 eV. Cu2ZnSnSe4 crystals ...
  • Temperature dependences of the thermoelectric power factor of TTT2I3 organic crystals 
    SANDULEAC, I.; CASIAN, A. (Institutul de Fizică Aplicată, AŞM, 2018)
    The organic crystals of p – type of tetrathiotetracene-iodide (TTT2I3) are very prospective for thermoelectric applications. The internal structure consists of segregate linear TTT molecular chains spaced at approximately ...
  • Optical properties of Cu2ZnGeSe4 
    GUC, M.; BODNAR, I.; DERMENJI, L.; LEVCENKO, S.; ARUSHANOV, E.; SYRBU, N. N. (Institutul de Fizică Aplicată al AŞM, 2012)
    Cu2ZnGeSe4 (CZGSe) is interesting and promising p-type semiconductor materials for optoelectronics applications and solar cells. In this paper we present reflectivity spectra measured at 300 K in the photon energy range ...
  • GaAs nanowires obtained via electrochemical etching of bulk substrates 
    MONAICO, Ed.; MORARI, V.; URSAKI, V. V.; MONAICO, E. I.; TIGINYANU, I. M.; NIELSCH, K. (Institutul de Fizică Aplicată, AŞM, 2018)
    Technological conditions for obtaining InP nanomembranes and nanowires by means of fast anodic etching of bulk substrates have been recently elaborated. Electrochemical etching is an easy, cost-effective, and very fast ...
  • Control of HVPE grown GaN nanostruturing by anodization 
    MONAICO, Ed.; MOISE, C.; MIHAI, G.; ENACHESCU, M.; NIELSCH, K.; URSAKI, V. V.; TIGINYANU, I. M. (Institutul de Fizică Aplicată, AŞM, 2018)
    In this paper, results of a systematic study of morphologies obtained with anodization in HNO3, HCl, and NaCl solutions are presented. It is shown that complex pyramidal structures composed by regions with modulated porosity ...
  • Gas sensing characterization of tellurium thin films by Kelvin probe technique 
    TSIULYANU, D.; MARIAN, S.; MOCREAC, O. (Institutul de Fizică Aplicată al AŞM, 2012)
    In this paper, the change of work function ( Δφ ) of the tellurium thin films was studied in response to different concentrations of nitrogen dioxide, carbon oxide, ozone and water vapor using a KP with a gold grid reference ...
  • Photoelectric and electrical properties of heterojunctions on cadmium tetraphosphide with zinc oxide 
    STAMOV, I. G.; TKACHENKO, D. V.; SYRBU, N.N. (Institutul de Fizică Aplicată, AŞM, 2018)
    Active structures on anisotropic crystals with large birefringence and semiconductor properties make it possible to solve a number of problems of polarization optoelectronics and simultaneously to study the properties of ...
  • Birefringence in PbGa2S4 AND CdGa2S4 crystals 
    NEMERENCO, L.; PARVAN, V.; SYRBU, N.; MASNIC, A. (Institutul de Fizică Aplicată al AŞM, 2012)
    Cadmium thiogallate CdGa2S4 has a coefficient of nonlinear susceptibility is five times greater than the coefficient of nonlinear susceptibility of niobate lithium . The dispersion of birefringence in CdGa2S4 and PbGa2S4 ...
  • Raman and infrared vibrational spectra of PbGa2S4 crystal 
    ZALAMAI, V. V.; SYRBU, N. N.; BEJAN, N. P.; HIRJEU, I. (Institutul de Fizică Aplicată, 2016)
    Raman scattering spectra in different geometries at temperatures 10 - 300 K and infrared vibrational spectra were investigated for PbGa2Se crystals. Contours of reflection spectra were calculated and parameters of phonons ...
  • Frenkel excitons and the energy bands structure in crystals PbGa2S4 
    STAMOV, I. G.; SYRBU, N. N.; URSAKI, V. V.; PARVAN, V. I.; ZALAMAI, V. V. (Institutul de Fizică Aplicată al AŞM, 2012)
    On the basis of lead tiogalat (PbGa2S4) was created the active elements for lasers which allow to control the generation spectroscopic properties of lasers and parameters of the laser radiation. In these crystals were found ...
  • Peierls structural phase transition in quasi-one-dimensional organic crystals 
    CASIAN, A.; BALMUS, I.; ANDRONIC, S. (Institutul de Fizică Aplicată al AŞM, 2012)
    The aim of this paper is to study the Peierls transition in Q1D organic crystals of TTF-TCNQ (tetrathiofulvalinium-tetracyanoquinodimethane) and TTT2I3 (tetrathiotetracene iodide). The first crystal has the conduction band ...

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