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  • 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 ...
  • SYRBU, N. N.; TIGINYANU, I. M.; ZALAMAI, V. V.; URSAKI, V. V.; RUSU, E. V. (ELSEVIER, 2004)
    Photoreflectivity and photoluminescence spectra in the region of exciton resonance were measured in ZnO single crystals. A, B, and C exciton binding energies were determined from the energy position of the ground and excited ...
  • 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 ...
  • SYRBU, N. N.; DOROGAN, A. V.; MASNIK, A.; URSAKI, V. V. (Academy of Sciences of Moldova, 2011)
    The main exciton parameters and the refined values of the energy intervals V1(Г7) - C1(Г6), V2(Г6) - C1(Г6) and V3(Г7) - C1(Г6) in CuAlSe2 crystals are discussed. The crystal field and spin-orbit splitting of the balance ...
  • 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 ...
  • NEMERENCO, L. (Academy of Sciences of Moldova, 2005)
    The excitonic reflectivity spectra and the wave-length derivative reflection spectra have been investigated for CuInSe2 crystals. The n =1, n =2 and n = 3 states of A, B and C exciton series are revealed and the contours ...
  • 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 ...
  • 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 ...
  • 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 ...
  • SYRBU, N. N.; ZALAMAI, V. V. (Elsevier, 2020)
    In the present work, absorption, reflection and wavelength modulated transmission spectra in wide temperature range 300–10 K in regions of the band gap minimum and of transitions to the excitonic band were studied.
  • SYRBU, Nicolae N.; ZALAMAI, Victor V.; STAMOV, Ivan G.; BERIL, Stepan I. (Beilstein Institut, 2020)
    The optical anisotropy of the Sb2Se3 crystals was investigated at 300 and 11 K. Excitonic features of four excitons (A, B, C, and D) were observed in the optical spectra of the Sb2Se3 single crystals and in the photoelectric ...
  • SYRBU, Nicolae N.; ZALAMAI, Victor V.; STAMOV, Ivan G.; BERIL, Stepan I. (Beilstein Institute for the Advancement of Chemical Sciences (Germany), 2020)
    The optical anisotropy of the Sb2Se3 crystals was investigated at 300 and 11 K. Excitonic features of four excitons (A, B, C, and D) were observed in the optical spectra of the Sb2Se3 single crystals and in the photoelectric ...
  • SYRBU, Nicolae; STAMOV, Ivan; DOROGAN, Andrei; NEMERENCO, Lucretia (IOP Publishing, 2006)
    The allowed exciton transitions n=1,2,3 were revealed in the reflection spectra of ZnAs2 monocrystals at 10 K. Transverse and longitudinal exciton energies, longitudinal splitting value, translation and reduced exciton ...
  • ZALAMAI, V. V.; SYRBU, N. N.; STAMOV, I. G. (Institutul de Fizică Aplicată, 2016)
    Spectral dependences of normal and anomaly dispersions of refractive index were calculated from interferential reflection and transmission spectra. It was shown, that A and B excitonic series were due to by hole V1 and ...
  • SYRBU, N. N.; STAMOV, I. G.; ZALAMAI, V. V.; DOROGAN, A. (Elservier, 2017)
    Excitonic polaritons of ZnAs2 single crystals had been investigated. Parameters of singlet excitons with Г2¯(z) symmetry and orthoexcitons 2Г1¯(y)+Г2¯(x) had been determined. Spectral dependencies of ordinary and extraordinary ...
  • 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 ...
  • SYRBU, N. N.; STAMOV, I. G.; PARVAN, V. I.; ZALAMAI, V. V.; TIGINYANU, I. M. (Elservier, 2013)
    We report on the intersection of spectral dependences of refractive indices no and ne at the wavelengths 546nm (λ0) and 450nm (λ01) in CdGa2Se4 single crystals. The value of difference Δn=ne−no is equal to zero at the ...
  • TIRON, A. V. (Institutul de Fizică Aplicată, AŞM, 2018)
    TlGaS2 crystals belong to triple thallium chalcogenides with well-pronounced lamellar structure. Due to specificity of crystal structure these crystals have a strong anisotropy of physical properties. The authors report ...
  • SYRBU, N. N.; ZALAMAI, V. V.; TIRON, A. V.; TIGINYANU, I. M. (Elservier, 2015)
    Absorption, reflection and wavelength modulated reflection spectra were investigated in ZnAl2Se4 crystals. The energy positions of ground and excited states for three excitonic series (А, В and С) were determined. The main ...
  • SYRBU, N. N.; ZALAMAI, V. V. (Elservier, 2018)
    Ground and excited states of four excitonic series (A, B, C and D) were discovered in HgGa2Se4 crystals at 10 K. Parameters of excitons and bands were determined. An effective mass of electrons mc is equal to 0.26m0 and ...

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