Browsing Colecția instituțională by Title

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  • Low-Temperature Preparation of Ag-Doped ZnO Nanowire Arrays, DFT Study, and Application to Light-Emitting Diode 
    PAUPORTÉ, Thierry; LUPAN, Oleg; ZHANG, Jie; TUGSUZ, Tugba; CIOFINI, Ilaria; LABAT, Frédéric; VIANA, Bruno (American Chemical Society, 2015)
    Doping ZnO nanowires (NWs) by group IB elements is an important challenge for integrating nanostructures into functional devices with better and tuned performances. The growth of Ag-doped ZnO NWs by electrodeposition at ...
  • Low-temperature sintering of highly conductive ZnO:Ga:Cl ceramics by means of chemical vapor transport 
    COLIBABA, G. V.; RUSNAC, D.; FEDOROV, V.; PETRENKO, P.; MONAICO, E. V. (Elservier, 2021)
    A new technology for sintering a ZnO + Ga2O3 powder via chemical vapor transport based on HCl has been developed. The proposed sintering method has the following advantages: a low sintering temperature of 1000–1100 °C, ...
  • Low-Temperature Solution Synthesis of Au-Modified ZnO Nanowires for Highly Efficient Hydrogen Nanosensors 
    LUPAN, Oleg; POSTICA, Vasile; WOLFF, Niklas; SU, Jun; LABAT, Frédéric; CIOFINI, Ilaria; CAVERS, Heather; ADELUNG, Rainer; POLONSKYI, Oleksandr; FAUPEL, Franz; KIENLE, Lorenz; VIANA, Bruno; PAUPORTÉ, Thierry (American Chemical Society, 2019)
    In this research, the low-temperature single-step electrochemical deposition of arrayed ZnO nanowires (NWs) decorated by Au nanoparticles (NPs) with diameters ranging between 10 and 100 nm is successfully demonstrated for ...
  • Low-Voltage UV-Electroluminescence from ZnO-Nanowire Array/p-GaN Light-Emitting Diodes 
    LUPAN, Oleg; PAUPORTÉ, Thierry; VIANA, Bruno (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2010)
    UV LEDs : The fabrication of an ITO/ZnO-nanowires/p-GaN/In-Ga LED structure is reported with an active emitting layer made of high-quality epitaxial ZnO grown electrochemically from a solution at low temperature (85 °C). ...
  • Lubricant-coolant fluid 
    MAZURU, Sergiu; TOPALA, Pavel; TOCA, Alexei; SCATICAILOV, Serghei; MAZURU, Sergiu (Technical University "Gheorghe Asachi" of Iași, 2019)
    Invenţia se referă la lichidele de ungere şi răcire utilizate la prelucrarea pieselor din oţel, şi anume la un lichid de ungere şi răcire pentru deformarea plastică de suprafaţă a angrenajelor de oţel. Lichidul, ...
  • Lucian Blaga „În marea trecere” 
    BRAGA, Mihail (Universitatea de Stat din Moldova, 2015)
    Lucian Blaga spune că el înmulţeşte tainele, minunele acestei lumi, pentru că el iubeşte această lume, pe când alţii cu mintea lor sugrumă viaţa, o nimicesc. Oare nu este vorba cumva de ştiinţa contemporană, care despică ...
  • Lucrări topo-geodezice la construcția și amenajarea centrului comercial Kaufland situat în mun. Chișinău, sec. Râșcani, str. Kiev, 7 
    MÎNZATU, Marius; GAVRIL, Alexandru (Universitatea Tehnică a Moldovei, 2023)
    Construcția unui centru comercial polivalent Kaufland și etapele topo-geodezice ce reprezintă siguranța de rigoare în timpul execuției construcției, precizia lucrărilor executate fără abateri de proiect.
  • Luminescence and electrophysical characteristics of ZnSe implanted with acceptor impurities 
    GEORGOBIANI, A. N.; AMINOV, U. A.; DRAVIN, V. A.; LEPNEV, L. S.; MULLABAEV, I. D.; URSAKI, V. V.; ILJUKHINA, Z. P. (ELSEVIER, 1999)
    The investigation of traps and recombination centres in structures based on ZnSe single crystals by means of the deep level transient spectroscopy, photoluminescence and electroluminescence methods are presented. The ...
  • Luminescence and Photoconductivity Caused by Antisite Defects in CdIn2S4 Single Crystals 
    GEORGOBIANI, A. N.; GRUZINTSEV, A. N.; RATSEEV, S. A.; TEZLEVAN, V. E.; TIGINYANU, I. M.; URSAKI, V. V. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 1986)
    Results of a study of the influence of nonstoichiometry as well as of annealing and argon ion implantation on photoluminescence and photoconductivity spectra of cadmium thioindate single crystals are presented. The energy ...
  • Luminescence at the axial centers of CdP2-D48 crystals 
    BERIL, S. I.; PANASENCO, V. V.; TKACHENKO, D. V.; STAMOV, I. G.; SYRBU, N. N. (Elservier, 2018)
    Emission lines of free excitons and excitons bound to axial centers have been observed in the luminescence spectra of CdP2-D48 crystals doped with Mn, Sn, and Sb at 10 K. Bands models of excitons bound to axial centers ...
  • Luminescence of GaN nanocolumns obtained by photon-assisted anodic etching 
    TIGINYANU, I. M.; URSAKI, V. V.; ZALAMAI, V. V.; LANGA, S.; HUBBARD, S.; PAVLIDIS, D.; FÖLL, H. (American Institute of Physics, 2003)
    GaN nanocolumns with transverse dimensions of about 50 nm were obtained by illumination-assisted anodic etching of epilayers grown by metalorganic chemical vapor deposition on sapphire substrates. The photoluminescence ...
  • Luminescence of porous semiconductor media covered with metallic films 
    POSTOLACHE, Vitalie (Academy of Sciences of Moldova, 2016)
    Porous GaP and InP layers with a pore diameter and a skeleton wall thickness of about 50 nm are prepared on bulk substrates by anodization; microgranular ZnO structures are produced by thermal treatment of ZnTe single ...
  • Luminescence of ZnGa2Î4 AND ZnAl2Î4 spinels doped with Eu3+AND Tb3+ ions 
    RUSU, E.; URSAKI, V.; NOVITSCHI, G.; BURLACU, A.; PETRENKO, P.; KULIUK, L. (I. I. Mechnikov National University, Odessa, 2008)
    Spinel type mono-phase the ZnGa2O4 and ZnAl2O4 compounds doped with Eu3+ and Tb3+ ions were obtained using two methods: solid phase reactions and deposition from chemical solutions. The luminescent analysis of the materials ...
  • Luminescence properties of a ZnO–In2O3 composite 
    URSAKI, V. V.; TIGINYANU, I. M.; BURLACU, A.; ZALAMAI, V.; JITARI, V. F. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2006)
    ZnO–In2O3 composite was prepared by thermal annealing of ZnIn2S4 crystals. Energy dispersive X-ray analysis demonstrated that annealing results in the formation of a composite consisting of ZnO and In2O3 phases with the ...
  • Luminescence properties of poly- (phenylene vinylene) derivatives 
    CUONG, Ton-That; GEOFF, Stockton; PHILLIPS, Matthew R.; NGUYEN, Thien-Phap; HUANG, Chun Hao; COJOCARU, Ala (John Wiley & Sons, Inc., 2008)
    Three PPV derivatives, BEHPPV, MEHPPV and MEHSPPV, were synthesised and characterised by photoluminescence (PL) and cathodoluminescence (CL) spectroscopies in the temperature range 10–300 K. PL and CL spectra of the polymers ...
  • Luminescence properties of ZnGa2O4 and ZnAl2O4 spinels doped with Eu3+ and Tb3+ ions 
    RUSU, E.; URSAKI, V.; NOVITSCHI, G.; VASILE, M.; PETRENCO, P.; KULYUK, L. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2009)
    Spinel-type ZnGa2O4 and ZnAl2O4 powders doped with Eu3+ and Tb3+ ions, including dual doping, have been prepared by solid phase reactions and by deposition from chemical solutions. XRD analysis demonstrates the high quality ...
  • Luminescent and Photoconductive Properties of AgGa2.5In2.5S8 and CuGa2.5In2.5S8 New Semiconductors 
    ANEDDA, A.; SERPI, A.; MOLDOVYAN, N. A.; TIGINYANU, I. M.; URSAKI, V. V. (IOP Publishing, 1993)
    Results of a complex study of photoluminescence (PL), photoconductivity (PC) and photo-voltaic (PV) spectra in AgGa2.5In2.5S8 and CuGa2.5In2.5S8 single crystals are presented. The values of indirect (Egi=2.25 eV) and direct ...
  • Luminescent materials based on semiconductor compound templates for random laser applications 
    URSAKI, V. V.; TIGINYANU, I. M.; SIRBU, L.; ENACHI, M. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2009)
    A survey of methods for the preparation of luminescent nanocomposite materials with the focus on random laser media on the basis of porous semiconductor and dielectric templates is presented. Media with controlled light ...
  • The luminescent properties of a ZnGa2O4 spinel doped with Eu 3+ and Er3+ ions 
    VASILE, M.; VLAZAN, P.; SFIRLOAGA, P.; GROZESCU, I.; AVRAM, N. M.; RUSU, E. (IOP Publishing, 2009)
    Nanophosphor of ZnGa2O4:Eu3+ and Er3+ were synthesized by the hydrothermal method. ZnGa2O4 is an intrinsic blue light emitter with a wavelength peak of approximately 608 nm depending on the gallium ratio. A luminescent ...
  • Luminescent properties of rare earth activated ZnO binary and ternary materials 
    ROGACHEV, Alexander; SEMCHENKO, A.; SIDSKY, V.; KOVALENKO, D.; GREMENOK, V.; ZARETSKAYA, H.; RUSU, Emil; TIVANOV, M. (Institutul de Fizică Aplicată, 2016)
    Development by sol-gel method of nanostructured luminescent materials based on binary and ternary oxides and containing rare earth ions for use as inorganic photoluminophors, active layers for solar cells and inert ...

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