Browsing 2019 by Title

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  • Structural and optical properties of amorphous GeTe films 
    SIMANDAN, I. D.; GALCA, A. C.; SAVA, F.; BUCUR, C.; DUMITRU, V.; POROSNICU, C.; MIHAI, C.; VELEA, A. (Tehnica UTM, 2019)
    Chalcogenide amorphous materials are known to have different structural and optical properties depending on the deposition method. Here, we investigate thin amorphous GeTe films [1] obtained through co-sputtering from ...
  • Structure of nanosized Ge2Sb2Te5 films with silver impurity 
    TURMANOVA, K.; ZHAKYPOV, A.; PRIKHODKO, O.; TOLEPOV, Z.; KOZYUKHIN, S.; ISMAILOVA, G.; MAKSIMOVA, S. (Tehnica UTM, 2019)
    The paper presents the results of studying the structure of nanosized films Ge2Sb2Te5 with silver impurity (Ge2Sb2Te5<Ag>). The films were obtained by the method of ion-plasma highfrequency magnetron sputtering. Upon ...
  • Study of electrodeposited Cu2ZnSnS4 thin film properties by a modified sulfurization process 
    AZMI, S.; KHOUMRI, EL M.; NOHAIR, M.; GALCA, A.-C.; DABALA, M. (Tehnica UTM, 2019)
    Copper zinc tin sulfide (CZTS) is being related to the highly successful Cu(In,Ga)(S,Se)2, and CuInS2 materials, is fast becoming a key instrument for use in thin-film solar cells because of the low cost, environmentally ...
  • Study of specific heat and Gibb’s free energy of ternary chalcogenide glasses 
    SARASWATA, V. K.; TANWARB, N.; SARASWATC, Yo. K. (Tehnica UTM, 2019)
    In this paper, an effort has been made to study the change in some thermodynamic parameters (say specific heat and Gibb’s free energy) of GeSeIn ternary chalcogenide glasses under non-isothermal conditions. Change in ...
  • Study of surface plasmon polarization conversion with Au surface-relief gratings 
    INDUTNYI, I.; MYN’KO, V.; SOPINSKYY, M. (Tehnica UTM, 2019)
    The effect of polarization conversion (PC) caused by excitation of surface plasmons on metal gratings was studied in many theoretical and experimental works. However, these studies mainly concerned the samples with spatial ...
  • Superimposed equally oriented diffraction gratings formed in As2S3 films 
    SERGEEV, S.A.; IOVU, M.S.; MESHALKIN, A.Yu. (Tehnica UTM, 2019)
    The known chalcogenide amorphous films are suitable materials for formation of composite diffraction structures due to their optical properties and advanced registration parameters. To obtain the multi-beam light diffraction ...
  • Surface plasmon resonance in As2Se3 planar waveguides for the IR spectral region 
    POPESCU, A.; BASCHIR, L.; SAVASTRU, D.; IOVU, M.; STAFE, M.; PUSCAS, N. (Tehnica UTM, 2019)
    The solid amorphous materials have some specific optical properties who cannot be finded in the crystalline state. One of the main phenomenon is photo-induced modification of optical constants (n, k), which can be used in ...
  • Surface plasmon resonance using As2S3 film for water salinity detection 
    BASCHIR, L.; MICLOS, S.; SAVASTRU, D.; POPESCU, A. A. (Tehnica UTM, 2019)
    Amorphous chalcogenide As2S3 films used in surface plasmon resonance structures improves the sensitivity of sensors using such structures by providing them with sharp resonance characteristics: changes at the sixth decimal ...
  • Surface relief formation in Yb doped As2S3–Se nanomultilayer structures 
    PAIUK, O.; MESHALKIN, A.; STRONSKI, A.; ACHIMOVA, E.; ABASHKIN, V.; PRISACAR, A.; TRIDUH, G.; KORCHOVYI, A.; OLEKSENKO, P. (Tehnica UTM, 2019)
    Chalcogenide glasses and films are promising materials for application in optoelectronics and photonics. Nanomultilayer structures based on chalcogenide glasses attract much attention due to their property of direct ...
  • Surface relief recording-erasing in amorphous chalcogenide layers and nanocomposites 
    KOKENYESI, S.; MOLNAR, S.; BURUNKOVA, J.; ALKHALIL, G.; CSARNOVICS, I.; KAGANOVSKII, YU. (Tehnica UTM, 2019)
    New materials and technologies are under intensive research and development last time for fabrication of separate or integrated photonic elements, matrices, photonic crystals, and metasurfaces in our laboratories and ...
  • Switching effect properties on Sn-doped Sb70Te30 thin films 
    ROCCA, J. A.; RODRÍGUEZ, O. C.; UREÑA, M. A.; BILOVOL, V.; FONTANA, M. (Tehnica UTM, 2019)
    Ge-Sb-Te phase-change materials in compositions close to Ge2Sb2Te5 and doped with Sn have been proposed to improve performance of phase-change memories (PCM) [1]. In a previous work we found that Sb70Te30 thin films show ...
  • Theoretical approach to study the solid state and optical characteristics of calcium sulpide [cas] thin film 
    UGWU, E. I. (Tehnica UTM, 2019)
    Calsium sulphide thin film has been studied in this work using theoretical approach in which a scalar wave is propagated through the material thin film deposited on a glass substrate with the assumption that the dielectric ...
  • Thin films of porphyrin-chalcogenide nanocomposite for methane sensing at room temperature 
    LORINCZI, A.; FAGADAR-COSMA, E.; SOCOL, G.; MIHAILESCU, A.; MATEI, E.; SAVA, F.; STEFAN, M. (Tehnica UTM, 2019)
    Methane is one of the components of natural gas and has multiple applications. It is an odorless gas, flammable and combustible in the presence of oxygen. Its lower explosion limit (LEL) is 5.0 vol.%, which corresponds ...

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