Browsing by Subject "absorption"

Sort by: Order: Results:

  • Optical Modulation Spectra of CdP2 Crystals and Ni-CdP2 Schottky Barriers 
    RADAUTSAN, S. I.; SYRBU, N. N.; KIOSEV, V. K. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1974)
    The relative photosensitivity spectra of Ni-CdP2 Schottky barriers have been investigated experimentally; in these spectra a structure consisting of nine maxima has been observed in the intrinsic absorption region. The ...
  • Optical Properties and Energy Band Structure of Zn3P2and Cd3P2 Crystals 
    SOBOLEV, V. V.; SYRBU, N. N. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1974)
    Edge absorption, photoconductivity, and reflectivity spectra are investigated of Zn3P2 crystals in the range from 1 to 12.5 eV and reflectivity spectra of Cd3P2 crystals in the range from 1 to 12.5 eV. The Eg value of Zn3P2 ...
  • Optical spectra and energy band structure of AgAsS2 crystals 
    STAMOV, I. G.; SYRBU, N. N.; URSAKI, V. V.; PARVAN, V. (ELSEVIER, 2012)
    Ground and excited states of three exciton series are observed in the region of fundamental absorption edge of AgAsS2 crystals. The contours of exciton reflection spectra are calculated and the main parameters of excitons ...
  • Optical spectra and energy band structure of single crystalline CuGaS2 and CuInS2 
    SOBOLEV, V. V.; SYRBU, N. N. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1972)
    The anisotropic spectra of edge absorption, reflection, and photoconductivity of the monoclinic ZnP2, and ZnA2, crystals have been experimentally investigated at 293 and 77 °K. The group-theoretical calculations of selection ...
  • Optical spectra in the region of exciton resonances in quantum wells and quantum dots of In0.3Ga0.7As/GaAs heterostructures 
    SYRBU, N. N.; DOROGAN, V.; DOROGAN, A.; VIERU, T.; URSAKI, V. V.; ZALAMAI, V. V. (ELSEVIER, 2012)
    The transparency, reflection and luminescence spectra of In0.3Ga0.7As structures with 8nm thickness and quantum wells limited by the barrier layer GaAs of a 9nm (upper layer) and 100nm (bottom layer) thickness had been ...
  • Optical spectra of TlGaS2 crystals 
    NEMERENCO, L.; SYRBU, N. N.; DOROGAN, V.; BEJAN, N. P.; ZALAMAI, V. V. (Elservier, 2016)
    Wavelength modulated reflection spectra measured at temperatures 14K and 300K in E||a and E||b polarizations for TlGaS2 crystals were investigated. The ground and excited states of excitons B2u in E||a polarization and B3u ...
  • The Peculiarities of Photoinduced Absorption in Chalcogenide Glass Fibres 
    CULEAC, I. P. (Springer Nature Switzerland, 1997)
    Photoinduced absorption (PA) provides a rich source of information about the localized states in the gap of chalcogenide glasses. Employment of fibre samples instead of thin film or bulk samples offers the possibility to ...
  • Photoconductivity and optical absorption of dimorphite thin films 
    TSIULYANU, D.; GOLBAN, G.; KOLOMEYKO, E.; MELNIC, O. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 1996)
    Optical absorption and photoconductivity of As4S3 thin films have been studied. The absorption coefficient is shown to be influenced by the technology of film preparation, in particular by growth velocity and substrate ...
  • Photoluminescente properties of Eu(o-MBA)3Phen organic compound embedded in PEPC polymer matrix 
    BORDIAN, O.; VERLAN, V.; CULEAC, I.; IOVU, M.; ZUBAREVA, V. (National Institute of Optoelectronics, Romania, 2017)
    We report preparation and characterization of new nanocomposite material based on oligomers poly-N-propyl carbazole (PEPC) and the organic compound Eu(o-MBA)3Phen, where o-MBA – ortho-methylbenzoic acid, Phen – phenanthroline. ...
  • Resonance impurity radiation in CuGaS2 crystals 
    SYRBU, N. N.; NEMERENCO, L. L.; TEZLEVAN, V. E. (Elservier, 2007)
    In this work the reflectivity spectra of the CuGaS2 crystals have been investigated in the EIIc polarization and the absorption spectra were studied in the E⊥c polarization at the 10K. The parameters of the excitons and ...
  • Retention of wine pollutants on chemically modified clays with dendrimers 
    HORTOLOMEU, Andreea; MIRILA, Diana-Carmen; DIDI, Mohamed Amine; STURZA, Rodica; SCUTARU, Yuri; NISTOR, Ileana-Denisa (Universitatea Tehnică a Moldovei, 2022)
    The purpose of this paper is to highlight the effect of chemically modified clays with dendrimers. The natural clay impregnated with dendrimers was used in several series of tests, with the aim of presenting their capacity ...
  • Some features of absorption and photoluminescence of wulfenite (PbMoO4) crystals 
    MUSINSCHI, V.; MUSINSCHI, C. (Academy of Sciences of Moldova, 2012)
    A description of experimental results of studying the optical absorption and photoluminescence (PL) of tetragonal (class 4/m ) PbMoO4 crystals is given. The light absorption (λ ≈ 0.30.5 μm) shows that the edge absorption ...
  • Spatial dispersion effects in the exciton-polariton reflectivity spectra of CuGaS/sub 2/ crystals 
    SYRBU, N.; URSAKI, V.; NYARI, T.; BLAJE, M.; PRUNIC, P.; TEZLEVAN, V. (IEEE, 2000)
    The analysis of the exciton reflectivity contour in CuGaS/sub 2/ crystals at 8 K was carried out. Absorption and luminescence spectroscopy was employed for additional characterization. The value of the exciton Ridberg ...
  • The superposition of one- and two-phonon absorption and radiation in TeO2 crystal 
    SYRBU, N. N.; CREŢU, R. V. (Elservier, 1996)
    Raman scattering and IR reflectivity for actual configuration have been investigated. The contours of reflectivity spectra rave been calculated. Phonon parameters have been determined. The temperature dependence of Raman ...
  • Synthesis, Absorption and Photoluminescence Properties of the New Coordination Compound Eu(DBM)3(Ph3PO)1H2O 
    BORDIAN, Olga; VERLAN, Victor; CULEAC, Ion; IOVU, Mihail; BULHAC, Ion; ZUBAREV, Vera (SPIE, 2018)
    A new coordinate organic compound (COC) Eu(DBM)3(Ph3PO)1H2O was synthesized and investigated (DBM stands for 1,3-Diphenyl-1,3-propanedione and Ph3PO for triphenylphosphine oxide). The size of obtained Eu(DBM)3(Ph3PO)1H2O ...
  • Technology and optical characterization of luminophore coordination compounds Eu(o-MBA)3Phen and NC PEPC/Eu(o-MBA)3Phen 
    BORDIAN, Olga; VERLAN, Victor; CULEAC, Ion; IOVU, Mihail; BULHAC, Ion; ZUBAREVA, Vera (SPIE, Society of Photo-Optical Instrumentation Engineers, 2016)
    Were obtained a new nanocomposite (NC) based on poly N-epoxy prolyl carbazol (PEPC) and the coordination compound luminophore Eu(o-MBA)3Phen, where o-MBA is o- methylbenzoic acid and Phen – phenanthroline. Nanocrystals of ...
  • Temperature dependence of photoinduced absorption in As2S3 glass fibers 
    CULEAC, I. P.; NISTOR, Iu. H. (Institutul de Fizică Aplicată al AŞM, 2015)
    We have investigated the photoinduced absorption in As2S3 glass fibers under continuos illumination of the lateral surface of the fibers with band-gap light. PA measurements have been carried out on unclad fibre samples ...

Search DSpace

Browse

My Account