Articole din publicaţii internaţionale: Recent submissions

  • Exciton-phonon spectra in CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals 
    RADAUTSAN, S. I.; SYRBU, N. N.; CRETU, R. V.; TEZLEVAN, V. E. (IEEE, 1997)
    In this work, the wavelength derivative reflection (WDR) spectra of CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals have been investigated in the region of A, B and C series. The n=1, n=2 and n=3 states are determined and contours ...
  • Exciton - phonon spectra and energy band structure of crystals 
    SYRBU, N. N.; BOGDANASH, M.; TEZLEVAN, V. E.; STAMOV, I. G. (IOP Publishing, 1997)
    The excitonic reflectivity spectra and the wavelength derivative reflection spectra have been investigated. The n = 1, n = 2 and n = 3 states of the A, B and C exciton series are determined. The exciton binding energies ...
  • Exciton spectra and energy band structure of CuGaSe2 single crystals 
    LEVCHENKO, S.; SYRBU, N. N.; TEZLEVAN, V. E.; ARUSHANOV, E.; MERINO, J. M.; LEÓN, M. (IOP Publishing, 2008)
    Photoreflectivity, wavelength modulation spectroscopy and photoluminescence measurements of CuGaSe2 are used to determine the exciton and band parameters as well as the energy band structure of CuGaSe2 at photon energies ...
  • Exciton spectra and energy band structure of Cu2ZnSiSe4 
    GUC, M.; LEVCENKO, S.; DERMENJI, L.; GURIEVA, G.; SCHORR, S.; SYRBU, N. N.; ARUSHANOV, E. (Elservier, 2014)
    Exciton spectra are studied in Cu2ZnSiSe4 single crystals at 10 and 300K by means of reflection spectroscopy. The exciton parameters, dielectric constant and free carriers effective masses are deduced from experimental ...
  • Exciton and phonon spectra of acoustooptic Tl3AsS3 crystals 
    GITSU, D. V.; SYRBU, N. N.; PRUNICH, P. I.; POPESKU, A. A. (Springer Nature Switzerland, 2001)
    The λ-modulated exciton reflection spectra of Tl3AsS3 crystals are investigated at 8 and 77 K, in which the ground (n=1) and excited (n=2, 3) exciton states are revealed. Taking into account the spatial dispersion, the ...
  • Энергетическая структура зон некоторых кристаллов группы AIIBIVCV2 
    КЕСАМАНЛЫ, Ф. П.; КРОИТОРУ, С. Г.; РУДЬ, Ю. В.; СОБОЛЕВ, В. В.; СЫРБУ, Н. Н. (Russian Academy of Sciences, 1965)
    Общее и детальное сходство спектров отражения кристаллов ZnSnAs2 , ZnSiP2 , ZnSiAs2 и групп A I V , A n l B v убедительно свидетельствует о справедливости предположений работы о весьма большом сходстве структур энергетических ...
  • Energy Band Structure of the Tetragonal Crystals ZnP2 and CdP2 
    SOBOLEV, V. V.; SYRBU, N. N.; SUSHKEVICH, T. N. (John Wiley & Sons, Inc., 1971)
    The anisotropic spectra of edge absorption, photoconductivity, emission, and reflectivity of the tetragonal ZnP2 and CdP2 crystals have been experimentally investigated in the range 1 to 12.5 eV. The selection rules for ...
  • Energy Band Structure of CuInS2 Crystals 
    SYRBU, N. N.; CRETU, R. V.; TEZLEVAN, V. E. (John Wiley & Sons, Inc., 1998)
    In this work the reflectivity spectra and wave-length derivative reflectivity (WDR) spectra of CuInS2 crystals have been investigated in the region E ≥ Eg. The n = 1, n = 2 and n = 3 excitonic states are determined and ...
  • Energetic band structure of Zn3P2 crystals 
    STAMOV, I. G.; SYRBU, N. N.; DOROGAN, A. V. (Elservier, 2013)
    Optical functions n, k, ε1, ε2 and d2ε2/dE2 have been determined from experimental reflection spectra in the region of 1–10eV. The revealed electronic transitions are localized in the Brillouin zone. The magnitude of valence ...
  • Asigurarea calităţii şi valabilității pâinii cu făină de porumb 
    BANTEA-ZAGOREANU, Valentina; GHENDOV-MOŞANU, Aliona (Universitatea de Stat „Bogdan Petriceicu Hasdeu“, Cahul, 2017)
    The subject of this paper relates to the investigation of the composition of high quality wheat flour bread with the addition of corn flour, in order to analyze the methods of controlling bread diseases during preservation. ...
  • Energetic band structure and optical spectra of CdGa2Se4, CdGa2S4 and CdAl2S4 crystals 
    SYRBU, N. N.; TEZLEVAN, V. E. (Elservier, 1995)
    Reflectivity spectra of CdGa2Se4, CdGa2S4 and CdAl2S4 crystals have been investigated in the range 1–6 eV for the polarization E∥c and E⊥c at 300 and 77 K. The valence band splitting caused by spin-orbital interaction and ...
  • Electronic and Vibrational Reflectivity and Absorption Spectra in ZrS2Crystals 
    SYRBU, Nicolae N.; CEBOTARI, Vladimir Z.; MOLDOVEANU, Nicolae P. (IOP Publishing, 1996)
    The study of both the absorption and λ-modulated absorption spectra have been investigated in the region of the lowest band gap. The reflectivity spectra of ZrS2 are presented in the region E>E g (1.5 to 6.5 eV). The IR ...
  • Electronic and optical properties of HgIn2S4 thiospinels 
    SYRBU, N. N.; TIRON, A.; ZALAMAI, V. V. (IOP Publishing, 2019)
    Photoluminescence (PL), transmission (T), reflection (R), wavelength modulated transmission (ΔT/Δλ) and reflection (ΔR/Δλ) spectra of thiospinel HgIn2S4 crystals were investigated in temperature interval form 10 to 300 K. ...
  • Влияние нарушения стехиометрии состава дифосфида цинка на спектры свободного экситона 
    РАДАУЦАН, С. И.; СЫРБУ, Н. Н.; ХАЧАТУРОВА, С. Б.; СТРАТАН, Г. И.; ПЕЕВ, Л. Г. (Russian Academy of Sciences, 1973)
    В настоящей работе исследованы экситонные водородоподобные состояния двух новых типов кристаллов ZnP2 в поляризациях Е || с (спектры отражения) и Е 1 с (спектры поглощения) и сопоставлены с оптическими спектрами. Показано ...
  • Edge Absorption of CdIn2S4 Single Crystals in the Region of Indirect Transitions 
    RADAUTSAN, S. I.; SYRBU, N. N.; TEZLEVAN, V. E.; SHERBAN, K. F.; BARAN, N. P. (Willey Online Library, 1973)
    This note presents results of edge absorption investigations of CdIn2S4 single crystals in the region of indirect transitions on crystals having different carrier concentration.
  • Double Davydov resonance in the vibrational spectra of Tl3AsS4 and Tl3PS4 crystals 
    SYRBU, N. N.; KRASOVSKY, V. T. (Elservier, 1995)
    Raman spectra of Tl3AsS4 and Tl3PS4 have been investigated at 300 and 77 K. The vibrational modes Ag, B1g, B2g and B3g are determined. The vibrational mode splittings caused by Davydov resonances are determined. Infrared ...
  • Davydov multiplets in vibrational spectra of and crystals 
    SYRBU, N. N.; CEBOTARI, V. Z. (IOP Publishing, 1998)
    In this paper the Raman vibrational spectra for all actually realized geometries of and crystals at 77 K, and infrared reflectivity spectra for both and polarizations in the range from 50 to at 300 K have been investigated. ...
  • Current sign inverter guided by polarization 
    STAMOV, I. G.; SYRBU, N. N.; DOROGAN, A. V.; NEMERENCO, L. L. (Elservier, 2008)
    In this work, there are studied the photodetectors’ properties (photocurrent sign inverter) of a linear polarized radiation realized on the basis of anisotropic semiconductors. The photocurrent sign guiding is made by the ...
  • Bound exciton in CuGaS2 
    SYRBU, N. N.; NEMERENCO, L. L.; BEJAN, V. N.; TEZLEVAN, V. E. (Elservier, 2007)
    In CuGaS2 crystals absorption and luminescence spectra at the temperature 9K at excitation by different wavelengths of Ar laser are investigated. A series of lines available in luminescence and absorption spectra is found. ...
  • Birefringence of ZnP2-D48 and Characteristics of Ме-ZnP2 Diodes 
    STAMOV, I. G.; SYRBU, N. N.; NEMERENCO, L.; ZALAMAI, V. (Open Science Publishers, 2015)
    Spatial dispersion in ZnP2-D4 8 has been studied. The spectral dependences of the refractive index nс (Е||с, k||a), nа (Е||а, k||с) and nb (E||b, k||c) had been determined. ZnP2-D4 8 crystals are isotropic at λо=612nm ...

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