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Browsing Articole din publicaţii internaţionale by Author "TEZLEVAN, V. E."

Browsing Articole din publicaţii internaţionale by Author "TEZLEVAN, V. E."

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  • Bound exciton in CuGaS2 
    SYRBU, N. N.; BEJAN, V. N.; TEZLEVAN, V. E.; NEMERENCO, L. L. (Institutul de Fizică Aplicată, AŞM, 2006)
    In CuGaS2 crystals absorption and luminescence spectra at the temperature 9 К at excitation by different wavelengths of Ar+ laser are investigated. In the luminescence and absorption spectra in crystals CuGaS2 at 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. ...
  • 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.
  • Electronic structure of HgGa2S4 
    ATUCHIN, V. V.; KESLER, V. G.; URSAKI, V. V.; TEZLEVAN, V. E. (ELSEVIER, 2006)
    Transport method are investigated with X-ray photoemission spectroscopy. The valence band of HgGa2S4 is found to be formed by splitted S 3p and Hg 6s states at binding energies BE=3–7eV and the components at BE=7–11eV ...
  • 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 ...
  • 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 ...
  • Excitation and temperature tuned photoluminescence in HgGa2S4 single crystals 
    URSAKI, V. V.; RICCI, P. C.; TIGINYANU, I. M.; ANEDDA, A.; SYRBU, N. N.; TEZLEVAN, V. E. (ELSEVIER, 2002)
    Mercury thiogallate single crystals are shown to exhibit bright photoluminescence (PL) tunable in a wide spectral range from green to red when changing the excitation power density, wavelength and sample temperature. Taking ...
  • 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, valence band splitting, and energy band structure of CuGaxIn1−xS2 and CuGaxIn1−xSe2 crystals 
    SYRBU, N. N.; TIGINYANU, I. M.; NEMERENCO, L. L.; URSAKI, V. V.; TEZLEVAN, V. E.; ZALAMAI, V. V. (ELSEVIER, 2005)
    Exciton spectra are studied in CuGaXIn1−XS2 solid solutions by means of photoreflectivity and wavelength modulation spectroscopy at liquid nitrogen temperature. The exciton parameters, dielectric constants, and free carrier ...
  • Exciton-phonon spectra in CuIn/sub 1-x/Ga/sub x/S/sub 2/ crystals 
    SYRBU, N. N.; NYARI, T.; BOGDANASH, M.; TEZLEVAN, V. E. (IEEE, 1999)
    In the present paper the excitonic reflectivity and the wavelength derivative reflection (WDR) study of CuGa/sub x/In/sub x-1/Se/sub 2/ solid solutions are presented. The states n=1, n=2 and n=3 of A, B, C exciton series ...
  • 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 luminescence and Raman scattering in CuGaS2 crystals 
    SYRBU, N. N.; TEZLEVAN, V. E.; GALBICH, I.; NEMERENCO, L. L.; URSAKI, V. V. (ELSEVIER, 2009)
    Photoluminescence and resonance Raman scattering spectra of CuGaS2 crystals are investigated at low temperature (10K) under the excitation with the radiation from a spectral interval obtained by passing the radiation of ...
  • Fabrication and photoluminescence properties of porous CdSe 
    TIGINYANU, I. M.; MONAICO, E.; URSAKI, V. V.; TEZLEVAN, V. E.; BOYD, Robert W. (Springer Nature Switzerland, 2005)
    We report the results of a study of the growth of pores in n-CdSen-CdSe single crystals using anodic etching techniques. Upon anodization in dark, a nonuniform distribution of pores was produced. However, anodic dissolution ...
  • Far Infrared and Raman Optical Study of CdInGaS4, CdIn2S4, HgInGaS4 and CdIn2S2Se2 Crystals 
    SYRBU, N. N.; RADAUTSAN, S. I.; CRETU, R. V.; TEZLEVAN, V. E.; MOLDOVEANU, N. A. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1996)
    Raman and infrared reflectivity spectra of CdInGaS4, CdIn2G4, HgInGaS4, and CdIn2S2Se2 crystals have been investigated. The fiindamental phonon parameters, the limiting dielectric constants ϵ0 and ϵ∞ and the reflectivity ...
  • Infrared lattice vibration study of CuIn5S8 
    NEUMANN, H.; SOBOTTA, H.; RIEDE, V.; TEZLEVAN, V. E.; SYRBU, N. N. (WILEY‐VCH Verlag GmbH & Co. KGaA, 1990)
    Infrared reflectivity spectra of the spinel compound CuIn5S8 are measured at room temperature in the wavenumber range from 180 to 4000 cm−1. It is found that the spectra are dominated by two strong modes with frequencies ...
  • The interference of additional waves of forbidden polaritons excited by allowed polaritons in CuGaS2 
    SYRBU, N. N.; URSAKI, V. V.; TIGINYANU, I. M.; TEZLEVAN, V. E.; BLAJE, M. A. (ELSEVIER, 2003)
    Additional waves of exciton polaritons are studied in thin (1.5–1.8 μm) CuGaS2 crystals at 9 K. The reflectivity spectra show a fine structure related to the interference of Fabry–Perot and additional waves which is a ...
  • Interference of resonance luminescence of exciton polaritons in CuGaS2 crystals 
    SYRBU, N. N.; STAMOV, I. G.; BEJAN, V. N.; TEZLEVAN, V. E.; NEMERENCO, L. L. (Institutul de Fizică Aplicată, AŞM, 2006)
    Excitons spectra in crystals CuGaS2 are investigated, in which the basic and excited states of excitons Γ4 and Г5 are found. The resonant luminescence ant its interference is found in the range excited states of excitons ...
  • Interference of resonance luminescence of exciton polaritons in CuGaS2 crystals 
    SYRBU, N. N.; NEMERENCO, L. L.; STAMOV, I. G.; BEJAN, V. N.; TEZLEVAN, V. E. (Elservier, 2007)
    The nonmodulated and wavelength-modulated reflection spectra of CuGaS2 crystals for the polarization EIIc of 10K are studied. The states n=1, 2 and 3 of the excitons Γ4 (A-excitons) and n=1, n=2 of B- and C-excitons are ...
  • Lattice vibrations in CuIn1−xGaxSe2 crystals 
    SYRBU, N. N.; BOGDANASH, M.; TEZLEVAN, V. E.; MUSHCUTARIU, I. (Elservier, 1997)
    Infrared reflectivity spectra of CuInSe2, CuGaSe2 and CuIn1−xGaxSe2 solid solutions have been investigated for the polarizations E|c and E⊥c. Reflectivity spectrum contours are calculated and phonon parameters and dielectric ...

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