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  • Optical and photoluminescence characteristics of amorphous nanocomposites containing organic compounds with Eu+3 and polymers 
    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), ...
  • Optical and Photoluminescence Properties of Nanocomposites Polymer-Compounds Coordinated with Eu+3 Ions 
    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 ...
  • Optical and sensory properties of ZnO nanofibrous layers grown by magnetron sputtering 
    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 ...
  • Optical and structural investigation of ZnO thin films prepared by chemical vapor deposition (CVD) 
    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 ...
  • Optical characteristics and high resolution 2D dosy NMR in CdSe quantum dots 
    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.
  • Optical characterization of AlN/GaN heterostructures 
    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 ...
  • Optical characterization of hierarchical ZnO structures grown with a simplified vapour transport method 
    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. ...
  • Optical characterization of novel terahertz emitters 
    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 ...
  • Optical characterization of the new nanocomposite SBMA/Eu(TTA)3(Ph3PO)2 
    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 ...
  • Optical constants of ZnSxSe1–x thin films calculated from transmission spectra 
    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 ...
  • Optical detectors based on birefringent ZnP2–C52h crystals 
    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 ...
  • Optical devices based on polarized light filters 
    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 ...
  • Optical electronic computer systems design in stationary and dynamic modes 
    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. ...
  • Optical fiber with restructurable autofocus 
    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 ...
  • Optical improved structure of polycrystalline silicon-based thin-film solar cell 
    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 ...
  • Optical losses characterization in waveguides through the photodeflection method 
    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 ...
  • Optical mixing in THz Schottky diodes 
    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 ...
  • Optical Modes Separator (Te, Tm) Based On In0.3Ga0.7As/GaAs Heterostructures With Quantum Wells 
    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 ...
  • Optical Modulation Spectra of CdP2 Crystals and Ni-CdP2 Schottky Barriers 
    RADAUTSAN, S. I.; SYRBU, N. N.; KIOSEV, V. K. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1974)
    The relative photosensitivity spectra of Ni-CdP2 Schottky barriers have been investigated experimentally; in these spectra a structure consisting of nine maxima has been observed in the intrinsic absorption region. The ...
  • Optical monitoring of solid electrolites formation in quaternary alloys Ag: AsS3-GeS4 and their analysis 
    TSIULYANU, D.; CIOBANU, M.; STRATAN, I. (Institutul de Fizică Aplicată, AŞM, 2018)
    Quaternary solid electrolytes based on Ag photodoped glasses have been fabricated and studied. The process of fabrication consists of: the synthesize of glassy materials followed by their structural and electrical ...

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