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Browsing Articole din publicaţii internaţionale by Subject "absorption spectra"

Browsing Articole din publicaţii internaţionale by Subject "absorption spectra"

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  • ZALAMAI, V. V.; TIRON, A. V.; RUSU, E. V.; SYRBU, N. N. (IOP Publishing, 2019)
    Absorption spectra in temperature range 300–10 K were studied. The minimal band gap A1 (1.091 eV at 300 K) is formed by direct allowed in E∣∣c polarization and forbidden in E∣∣a polarizations transitions. The next interval ...
  • SEDDON, A. B.; FURNISS, D.; IOVU, M. S.; SHUTOV, S. D.; SYRBU, N. N.; ANDRIESH, A. M.; ADRIAENSSENS, G. J. (Elservier, 2003)
    The absorption and emission spectra of Ga–La–S–O glasses with fixed cation ratio Ga/La=0.7/0.3 and two oxygen contents 0.65 wt% and 2.95 wt% were studied for two Pr3+ doping levels of 0.1 and 1.0 wt%. Presence of oxygen ...
  • 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 ...
  • SYRBU, N. N.; ZALAMAI, V. V.; BEJAN, N. P.; TIRON, A. V. (Editura Academiei Romane, 2015)
    The indirect transitions in excitonic region with phonons emission in absorption spectra of TlGaSe2 crystals and ground and excited states of four excitonic series A, B, C and D were observed. The parameters of excitons ...
  • BERIL, S. I.; STAMOV, I. G.; TIRON, A. V.; ZALAMAI, V. V.; SYRBU, N. N. (Elservier, 2020)
    Anisotropy of optical properties of Sb2S3 single crystals was investigated at 11 and 300 K. Ground and excited states of four excitonic states (A, B, C and D) were found out. Parameters of observed excitons and bands V1 – ...
  • SYRBU, N. N.; BOGDANASH, M.; TEZLEVAN, V. E. (Springer Nature Switzerland, 1997)
    Infrared reflection spectra of CuInSe2 crystals are investigated for the polarizations E∥c and E⊥c. Contours of the reflection spectra are calculated and phonon parameters and dielectric constants are determined. The ...
  • SYRBU, N. N.; RADAUTSAN, S. I.; CRETU, R. V.; MUSHINSKII, V. P.; CEBOTARI, V. Z. (IEEE, 1995)
    The superposition of infrared reflectivity spectra end lattice radiation of TeO/sub 2/ crystals have been investigated. Both radiation spectra at high temperatures and absorption spectra in the two-phonon range for ...
  • ARUSHANOV, E.; LEVCENKO, S.; SYRBU, N. N.; NATEPROV, A.; TEZLEVAN, V.; MERINO, J. M.; LEÓN, M. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2006)
    Optical absorption spectra of CuIn5Se8 and CuGa3Se5 single crystals grown by chemical vapour transport were investigated in the range of 10–300 K. The logarithmic variation of the absorption coefficient with photon energy ...

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