Browsing Colecția instituțională by Title

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  • RADAUTSAN, S. I.; SYRBU, N. N.; TEZLEVAN, V. E.; SHERBAN, K. F.; STRUMBAN, E. E. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1973)
    The spectra of edge absorption, photoconductivity, and reflectivity of single crystals of solid solutions on the basis of CdIn2S4 have been studied. The values of Eg, the character of transitions responsible for Eg, the ...
  • RADAUTSAN, S. I.; MOLODYAN, I. P.; SYRBU, N. N.; TEZLEVAN, V. E.; SHIPITKA, M. A. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1972)
    The present paper contains results of a study of the edge absorption at 293 and 77 0K, the spectral distribution of the photoconductivity, and the reflectivity spectra in the fundamental absorption region. An interpretation ...
  • VERLAN, V. I.; IOVU, M. S.; CULEAC, I.; NISTOR, YU. H.; TURTA, C. I.; ZUBAREVA, V. E. (National Institute of Optoelectronics, Romania, 2011)
    Thin films (1-10 µm thickness) of nanocomposites (NC) based on polymers and organic coordinated compounds (OCC) Eu(TTA)3H2O, Eu(TTA)3Phen, Eu(DBM)3Phen, Eu(TTA)2(Ph3PO)2NO3 (where TTA is thenoyltrifluoroacetonate (C8H5F3O2S), ...
  • VERLAN, V. I.; IOVU, M. S.; CULEAC, I. P.; TURTA, C. I.; ZUBAREVA, V. E. (American Scientific Publishers, 2012)
    Thin films (1–3 μm thickness) of nanocomposites (NCs) based on organic compounds with Eu3+ ions (Eu(TTA)3H2O, Eu(TTA)3 Phen, Eu(DBM)3 Phen and Eu(TTA)2(Ph3PO)2NO3 and polymer polyvinylpyrrolidone (PVP) or copolymer ...
  • GHIMPU, L.; TIGINYANU, I. M.; URSAKI, V.; LUPAN, O.; CHOW, L.; RUDZEVICH, Y.; LIN, Y. (Institute of Electrical and Electronics Engineerings, IEEE, 2012)
    This paper presents optical and sensory properties of ZnO nanofirous layers grown by a cost-effective and fast fabrication method based on magnetron sputtering. The as-prepared nanofibrous layers show good conductive ...
  • PURICA, M.; BUDIANU, E.; RUSU, E.; DANILA, M.; GAVRILA, R. (Elservier, 2002)
    Transparent and conductive ZnO thin films have been prepared by a method derived from chemical vapor deposition using Zn (C5H7O2)2 as Zn source. The deposited thin ZnO layers of ∼0.1 μm thickness on Si and InP semiconductor ...
  • GERU, I.; BORDIAN, O.; LOSHMANSKY, C.; CULEAC, I.; BARBA, A.; TURTA, C. (Institutul de Fizică Aplicată al AŞM, 2014)
    We present experimental results on preparation and characterization of colloidal CdSe QDs in organic solvent. Colloidal semiconductor QDs were prepared via a chemical route.
  • URSAKI, V. V.; TIGINYANU, I. M.; ZALAMAI, V. V.; HUBBARD, S. M.; PAVLIDIS, D. (American Institute of Physics, 2003)
    AlN/GaN/sapphire heterostructures with AlN gate film thickness of 3–35 nm are characterized using photoreflectivity (PR) and photoluminescence (PL) spectroscopy. Under a critical AlN film thickness, the luminescence from ...
  • URSAKI, V. V.; RUSU, E. V.; SARUA, A.; KUBALL, M.; STRATAN, G. I.; BURLACU, A.; TIGINYANU, I. M. (IOP Publishing, 2007)
    A new ZnO micro/nanostructure morphology in the form of micro-torches was grown in the family of ZnO hierarchical structures by a simplified thermal chemical vapour transport and condensation method using a vertical furnace. ...
  • STEELE, J. A.; RADHANPURA, K.; LEWIS, R. A.; SIRBU, L.; TIGINYANU, I. M. (IEEE, 2014)
    Bulk (111) and (100) InP wafers and nanoporous membranes have been studied using free space time-domain spectroscopy. The nonlinear optical response is shown to be dependent on heavy ion (Kr+15, Xe+23) dose, crystallographic ...
  • BORDIAN, Olga; VERLAN, Victor; CULEAC, Ion; IOVU, Mihail; ZUBAREVA, Vera; NISTOR, Iurie (SPIE, Society of Photo-Optical Instrumentation Engineers, 2015)
    We describe a new nanocomposite material based on the copolymer of styrene with butyl methacrylate (1:1) (SBMA), and coordinating compound of Europium(III) Eu(TTA)3(Ph3PO)2. The SBMA/Eu(TTA)3(Ph3PO)2 nanocomposite was ...
  • POPA, Mihail; TIGINYANU, Ion; URSAKI, Veacheslav (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM, 2017)
    We report the results of calculations of some optical parameters of ZnSxSe1–x thin films based on measured transmission spectra by using the Swanepoel’s method, the Wemple– DiDomenico single-oscillator model, and the ...
  • STAMOV, I. G.; SÎRBU, N. N.; DOROGAN, A. V. (Romanian Inventors Forum, 2017)
    The spectral dependences of refractive indexes had been studied in crystals. The electrical, spectral and azimuth characteristics of monolith, and discrete structures had been, also, studied. These crystals possess ...
  • SYRBU, N.; DOROGAN, A.; STAMOV, I.; DOROGAN, V. (Romanian Inventors Forum, 2016)
    The paper presents several concepts of devices based on anisotropic crystals, which permit to separate polarized light signals. The devices are elaborated using semiconductor waveguides and ZnAs2 layers, which can filter ...
  • PERJU, Veacheslav L. (SPIE, 2001)
    The theory of designing the optical-electronic image processing computer systems has been presented. A model of parallel image processing system has been considered, that is based on the principle of function decomposition. ...
  • ȚURCANU, Dinu; NISTIRIUC, Pavel; NISTIRIUC, Ana; CHIHAI, Andrei (Technical University "Gheorghe Asachi" of Iași, 2020)
    Invenția se referă la domeniul de optoelectronică în sistemele și comunicațiile optice, în special la fibra optică cu autofocus restructurabil, care poate fi utilizată în rețelele și sistemele de comunicații optice ...
  • BUDIANU, Elena; PURICA, Munizer; MANEA, Elena; RUSU, Emil; GAVRILA, Raluca; DANILA, Mihai (Elservier, 2002)
    This paper presents an n-i-p type solar cell structure consisting of polycrystalline silicon thin film as an absorber of incident radiation and a ZnO thin film for optical improvement. The characteristics of Si layers ...
  • BERTOLOTTI, Mario; LIAKHOU, G. L.; VOTI, Roberto Li; MATERA, A.; SIBILIA, Concita; VALENTINO, M. (SPIE, 1997)
    The photodeflection method is able to characterize the propagation losses in optical waveguides. The theory of the transverse configurations in air and in situ is reviewed. The procedure to determine the propagation loss ...
  • SCHOENHERR, D.; COJOCARI, O.; SYDLO, C.; GOEBEL, T.; FEIGINOV, M.; HARTNAGEL, H. L.; MEISSNER, P. (IEEE, 2008)
    This paper presents the effect of optical mixing in zero-bias InGaAs Schottky detectors at THz frequencies. The excitation of ultrafast carriers by illumination with two 1.5 mum laser beams is verified. This proves the ...
  • SÎRBU, N.; DOROGAN, A.; VIERU, T.; KAPON, E.; MEREUŢA, A. (Romanian Inventors Forum, 2011)
    The study of luminescence, absorption and reflection spectra of In0.3Ga0.7As/GaAs heterostructures with quantum wells was made for determining fundamental electronic states of polariton excitons in quantum wells. The ...

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