IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Author "MOCREAC, O."

Browsing Articole din publicaţii internaţionale by Author "MOCREAC, O."

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  • Chalcogenide based sensitive layers for work function gas and humidity sensors 
    TSIULYANU, D.; MARIAN, S.; MOCREAC, O. (Одеський нацiональный университет iменi I. I. Мечникова, 2012)
    In this work the authors report about characterization of chalcogenide based thin films, as a materials for gas – sensing applications. The sensing behavior of the As-S-Te-Ge films was tested with environmental pollutant ...
  • Concentration induced damping of gas sensitivity in ultrathin tellurium films 
    TSIULYANU, D.; MOCREAC, O. (Elsevier, 2013)
    The damping of sensitivity induced by high gas (NO2) concentration in tellurium films was observed for the first time. The phenomenon becomes apparent in ultrathin (less than 40nm) shown by AFM, SEM and XRD analyses to be ...
  • Flexible thin films based on Te-SnO2 nanocomposites and their gas sensing properties 
    TSIULYANU, D.; MOCREAC, O.; AFANASIEV, A.; MONAICO, E. (International Conference on Physics of Advanced Materials (ICPAM), 2021)
    Printed electronics becomes very attractive due to the ability of using sustainable, compostable and recyclable materials including biobased plastics and paper in the elaboration of different flexible thin-film sensors, ...
  • Gas sensing characterization of tellurium thin films by Kelvin probe technique 
    TSIULYANU, D.; MARIAN, S.; MOCREAC, O. (Institutul de Fizică Aplicată al AŞM, 2012)
    In this paper, the change of work function ( Δφ ) of the tellurium thin films was studied in response to different concentrations of nitrogen dioxide, carbon oxide, ozone and water vapor using a KP with a gold grid reference ...
  • Impedance spectroscopy of sensitive to harmful gases tellurium thin films 
    TSIULYANU, D.; MOCREAC, O. (Forum of Chalcogeniders, 2011)
    Impedance spectra of tellurium thin films with interdigital platinum electrodes have been investigated in different gaseous media. For the first time it is pointed out that tellurium films exhibit sensitivity to H2 at room ...
  • Impedance Spectroscopy of Tellurium Thin Films Sensitive to NO2 
    TSIULYANU, D.; MOCREAC, O. (Springer Nature Switzerland, 2011)
    Impedance spectra of tellurium thin films with interdigital platinum electrodes have been measured in dry synthetic air and gaseous media with nitrogen dioxide. Analyses of Cole-Cole plots allowed to evaluate the characteristic ...
  • Morphology, XRD and EDX study of screen-printed thick films based on SnO2 / Te nanocomposites 
    TSIULYANU, D.; AFANASIEV, A.; MOCREAC, O.; MONAICO, E.; VOLODINA, G. (Institute of Physics NAS Ukraine, 2021)
    Nanocomposites of tellurium and tin dioxide have been synthesized via solvothermal recrystallization of polycrystalline tellurium powder, followed by Te reduction in the presence of a tin chloride solution. Thick (~15 μm) ...
  • Peculiarities of Ultrathin Amorphous and Nanostructured Te Thin Films by Gas Sensing 
    TSIULYANU, D.; MOCREAC, O.; CIOBANU, M.; ENACHI, M.; VOLODINA, G. (American Scientific Publishers, 2014)
    The extinction of sensitivity to nitrogen dioxide induced by high gas concentration have been observed in ultrathin tellurium films. The phenomenon becomes apparent in both continuous and nanostructured films shown by AFM, ...
  • Sensitivity of nanostructured tellurium films to low - reactive gases 
    MOCREAC, O.; TSIULYANU, D.; AFANASIEV, A. (NATO Advanced Study Institute, 2019)
    Electrical conductivity and impedance spectra of nanostructured tellurium thin films have been investigated in different gaseous media. The films were fabricated by thermal vacuum deposition of pure tellurium (purity 99.999 ...
  • Surface Phenomena in Glassy Chalcogenides by Gas Sensing 
    TSIULYANU, D.; CIOBANU, M.; MOCREAC, O. (Springer Nature Switzerland, 2020)
    The surface phenomena in glassy chalcogenides (GCh), including those caused by gas adsorption, are reviewed and discussed. A detailed quantitative analysis is made on experimental data taken on glassy and nanocrystalline ...

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