Browsing 2005 by Author "TIGINYANU, I. M."

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  • Hydrogen detector based on GaN nanocones 
    POPA, V.; VOLCIUC, O.; SONTEA, V.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    In this paper, we demonstrate that using GaN nanocone morphology obtained by photo electrochemical etching, it is possible to obtain very stable and easy in manufacturing gas sensors, in particular for hydrogen detection.
  • Influence of close space sublimation processing upon the granular growth of thin-film CdTe solar cells 
    GHIMPU, L.; URSAKI, V. V.; POTLOG, T.; SIRBU, L.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    In this paper we study the impact of CSS processing parameters upon the morphology of CdTe/CdS solar cells.
  • Influence of source temperature upon the contamination with cu of thin-film CDTE solar cells grown by close space sublimation technique 
    GHIMPU, L.; URSAKI, V. V.; POTLOG, T.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    Photoconversion efficiencies up to 16.5 % have been attained from CdTe/CdS solar cells. CdTe/CdS heterojunction can be deposited cheaply over large areas using the close space sublimation (CSS) technique. In a previous ...
  • Luminescence and trapping of light in porous InP networks 
    MONAICO, E.; URSAKI, V. V.; BURLACU, A.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    In this paper we investigate the effect of light trapping inside highly scattering InP porous layers on the luminescence properties of the material.
  • Luminescence of porous ZnSe layers 
    MONAICO, E.; URSAKI, V. V.; BURLACU, A.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    In this paper we compare the luminescence properties of bulk ZnSe crystals and porous layers prepared by photon-assisted electrochemical etching.
  • Luminescence of ZnSe crystals grown with different vapor transport agents 
    ENACHE, M.; URSAKI, V. V.; RUSU, E. V.; TAZLAVAN, V. E.; SONTEA, V. P.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    In this paper we compare the luminescence properties of bulk ZnSe crystals grown by vapor transport method with different transport agents in order to establish the influence of the transport agent on the relation between ...
  • Mechanisms of enhancement of nonlinear optical response in nanostructured III-V compounds 
    SERGENTU, V.; KRAVETSKY, I.; URSAKI, V.; SIRBU, L.; VOLCIUC, O.; POPA, V.; TIGINYANU, I. M.; BOYD, Robert W. (Technical University of Moldova, 2005)
    The goal of this paper is to propose a new mechanism of nonlinear optical properties enhancement in nanostructured semiconductors based on the concept of photonic crystals (PC). The photonic crystal is usually formed as a ...
  • Quasi-vertical Schottky-structures for THZ-applications 
    COJOCARI, O.; SYDLO, C.; HARTNAGEL, H.-L.; TIGINYANU, I. M. (Technical University of Moldova, 2005)
    This paper presents the results of a systematical work on the improvement of high-frequency performance of quasi-vertical structures for THz-applications. Three versions of structure-design based on a quasi-vertical concept ...

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