IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Title

Browsing Articole din publicaţii internaţionale by Title

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  • Photoluminescence of chemical bath deposited ZnO:Al films treated by rapid thermal annealing 
    SHISHIYANU, S. T.; LUPAN, O. I.; MONAICO, E. V.; URSAKI, V. V.; SHISHIYANU, T. S.; TIGINYANU, I. M. (ELSEVIER, 2005)
    Aluminum-doped zinc oxide (ZnO:Al) films fabricated by chemical bath deposition are characterized using scanning electron microscopy and photoluminescence (PL) spectroscopy. The impact of rapid thermal annealing (RTA) upon ...
  • Photoluminescence of Eu-doped ZnO structures 
    URSAKI, Veaceslav V.; RUSU, Emil; ZALAMAI, Victor; SIRBU, Lilian; MONAICO, Eduard; TIGINYANU, Ion M. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2004)
    ZnO-based red phosphors were prepared by different methods. One phosphor was grown from a Na2B4O7 melt, and another one was prepared from a ZnO:Eu2O3 powder via electron beam treatment. The e-beam processing is found to ...
  • Photoluminescence of ZnO layers grown on opals by chemical deposition from zinc nitrate solution 
    URSAKI, V. V.; TIGINYANU, I. M.; ZALAMAI, V. V.; MASALOV, V. M.; SAMAROV, E. N.; EMELCHENKO, G. A.; BRIONES, F. (IOP Publishing, 2004)
    The emission from ZnO layers grown on the surface of bulk opals using chemical deposition is studied under excitation by the 351.1 nm line of an Ar+ laser at different excitation power densities and temperatures. The ...
  • Photoluminescence properties of PVP/Eu(TTA)2(Phen3PO)2NO3 nanocomposites 
    VERLAN, V. I.; IOVU, M. S.; CULEAC, I.; NISTOR, Y.; TURTA, C. I.; ZUBAREVA, V. E. (Elsevier, 2011)
    Thin films (1–10μm thickness) of nanocomposites (NC) based on organic coordinated compound (OCC) Eu(TTA)2(Phen3PO)2NO3 (where TTA is thenoyltrifluoroacetonate (C8H5F3O2S), Phen – 1,10-phenanthroline (C12H8N2)) and polymer ...
  • Photoluminescence study of /spl alpha/-ZnAl/sub 2/S/sub 4/ single crystals 
    URSAKI, V.; BOLDURESCU, V.; BURLAKOV, I.; SYRBU, N.; NYARI, T. (IEEE, 2000)
    Photoluminescence (PL) spectra of ZnAl/sub 2/S/sub 4/ crystals with spinel structure were studied under the extrinsic excitation. The PL bands at 0.98 eV and 1.34 eV are suggested to be caused by native defects; while the ...
  • Photoluminescence study of CdTe/CdS solar cells grown from a source with Cu residual impurity 
    GHIMPU, L.; URSAKI, V. V.; POTLOG, T.; TIGINYANU, I. M. (IOP Publishing, 2005)
    Three photoluminescence (PL) bands centred at 1.30, 1.35 and 1.45 eV have been observed in the PL spectrum of CdTe/CdS thin film solar cells grown by close space sublimation (CSS) techniques from a source with Cu residual ...
  • Photoluminescence Study of Nitrogen-Related States in ZnSe 
    IVANOVA, Galina N.; NEDEOGLO, Dmitrii D.; NEDEOGLO, Natalia D.; RUSU, Emil V.; SIRKELI, Vadim P.; STRATAN, Gheorghe I.; URSAKI, Veacheslav V. (AIP Publishing LLC, 2007)
    Photoluminescence of N-doped ZnSe crystals is studied at temperatures between 10 and 300 K. Doping with N leads to the formation of simple N-based donor and acceptor defects, as well as associative N-based acceptors. The ...
  • Photoluminescent nanocomposite materials based on SBMA copolymer and CdS 
    IOVU, M.; ENACHESCU, M.; CULEAC, I.; VERLAN, V.; ROBU, S.; BOJIN, D.; NISTOR, Iu.; COJOCARU, I. (SPIE, 2015)
    We present experimental results on copolymer-based nanocomposite made of styrene with butyl methacrylate (SBMA) (1:1) and inorganic semiconductor CdS. Thin film composite samples have been characterized by UV-Vis absorption ...
  • Photoluminescent thin films with nanostructured surface 
    ANDRIESH, A. M.; IOVU, M. S.; CULEAC, I. P.; NISTOR, Iu. H.; ROBU, Şt.; DRAGALINA, G.; POPUŞOI, A.; MITCOV, D.; ENACHE, M.; PETRENKO, P. (Institutul de Fizică Aplicată al AŞM, 2012)
    We present here experimental results on polymer-inorganic nanocomposite material made of styrene with butyl methacrylate (SBMA) with isothiocyanato-chalcone (ITCC) and inorganic semiconductor CdS. Styrene with butyl ...
  • 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. ...
  • Photonic Crystal Structures Based on GaN Ultrathin Membranes 
    VOLCIUC, Olesea; SERGENTU, Vladimir; TIGINYANU, Ion; SCHOWALTER, Marco; URSAKI, Veaceslav; ROSENAUER, Andreas; HOMMEL, Detlef; GUTOWSKI, Jürgen (American Scientific Publishers, 2014)
    We report on maskless fabrication of ultrathin (d ~ 15 nm) nanoperforated GaN membranes exhibiting a triangular lattice arrangement of holes with a diameter of 150 nm, and show that these membranes represent an intermediate ...
  • Photosensivity of heterostructures produced by aerosol deposition of ZnMgO thin films on Si substrates 
    MORARI, Vadim; POSTOLACHE, Vitalie; RUSU, Emil; LEISTNER, Karin; NIELSCH, Kornelius; URSAKI, V. V.; TIGINYANU, I. M. (Universitatea Politehnică din Bucureşti, 2020)
    ZnMgO thin films were prepared on Si substrates by aerosol deposition method using zinc acetate and magnesium acetate as precursors. The obtained films were investigated by scanning electron microscopy (SEM), energy ...
  • Photouminescence and Optical Properties of PVP/Tb(TTA)2(Ph3PO)2NO3 Nanocomposites 
    VERLAN, V. I.; IOVU, M. S.; CULEAC, I.; NISTOR, Y. H.; TURTA, C. I.; ZUBAREVA, V. E. (SPIE, 2012)
    Thin films (1-10 μm thickness) of nanocomposites (NCs) based on coordinated compounds (CC) Tb(TTA)2(Ph3PO)2NO3 (where TTA is thenoyltrifluoroacetonate (C8H5F3O2S), Ph3PO - triphenylphosphine oxide) and polymer – ...
  • The Photovoltaic Greenhouses - a Challenge for Republic of Moldova 
    BOSTAN, Ion; GUŢU, Aurel; GUŢU-CHETRUŞCA, Corina (IEEE, 2019)
    The photovoltaic greenhouses that emerged at the beginning of the century as a way of arable land preservation through the concordance between electricity generation and crop growth have shown a number of advantages for ...
  • Photovoltaic Stations with NPC Inverters Adjusted by Specific Control and PWM Schemes and Algorithms 
    OLESCHUK, Valentin; LUPU, Mihai (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    This paper presents brief overview of the use of modulated neutral-point-clamped (NPC) inverters (NPCINs) with specific control and modulation schemes and techniques as basic workhorses of transformer-based grid-connected ...
  • Phycobiliprotein accumulation in cyanobacterium Nostoc linckia AND modification of antioxidant activity 
    VALUTA, Ana; CEPOI, Liliana; RUDI, Ludmila; BULHAC, Ion; BOUROSH, Paulina; Olga BOLOGA, Olga (Universitatea din Oradea, 2015)
    The article deals with iron(III) coordination compounds with Schiff bases as ligands and their impact on phycobiliprotein accumulation by cyanobacterium Nostoc linckia. Stimulatory effect depends on the applied dose and ...
  • Physical and chemical processes during the machining by means of the electro-erosive method 
    TOPALĂ, Pavel; SLĂTINEANU, Laurenţiu; STOICEV, Petru (Romanian Association of Nonconventional Technologies, 2010)
    We have analyzed the processes that take place in the interstice and in the electrode surfaces during machining by electro-erosion. It is demonstrated that machining by electro-erosion is accompanied by a series of physical ...
  • Physical-chemical characteristics of the taste of jam type products 
    PALADI, Daniela; TATAROV, Pavel (University Dunarea De Jos, Galati, 2008)
    The purpose of this work was to elaborate the physical-chemical method able to estimate the sweet taste degree of jam as a function of the physical-chemical properties of fruits and saccharose content of the final products. ...
  • Physico-Chemical and Nutritional Characteristics of Soriz Flour (Sorghum Oryzoidum) 
    SIMINIUC, Rodica; ŢURCANU, Dinu (Global Journals Inc., 2021)
    The assortment of gluten-free flours in the Republic of Moldova is very small, and the properties of these flours are not sufficiently studied. Sorghum (Sorghum Oryzoidum) is a relatively new cereal, the industrial production ...
  • Physico-chemical and sensory analysis of banana flour 
    PALADI, Daniela; MANEA, Andreea-Rafaela; MELENCIUC, Mihai; MIJA, Nina (Galaţi University Press, 2023)
    The flour was obtained by drying green bananas in a dehydrator at a temperature of 60 oC for 6-10 hours. Then it was analyzed physico-chemically by determining the content of polyphenols (80,16 g/100 g), titratable acidity ...

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