Articole din publicaţii internaţionale

 

Recent Submissions

  • PLESCO, I.; POSTOLACHE, V.; VOLODINA, G.; ZALAMAI, V.; GHIMPU, L.; TIGINYANU, I. (Springer Nature Switzerland, 2017)
    Methylammonium lead-halide perovskites are very promising for applications as solar light-harvesting materials. This paper presents a study on the methylammonium iodide and iodide-chloride perovskite films prepared by spin ...
  • SERGENTU, V. V.; URSAKI, V.; MONAICO, Ed.; TIGINYANU, I. M.; PRISLOPSKI, S. Ya.; GAPONENKO, S. V. (World Scientific, 2017)
    The previously discovered anomalous retroreflection in a strongly absorbing nanostructured medium is explained by using “dark” and “bright” modes. The consideration provides rationale not only for the retroreflection itself ...
  • GHIMPU, L.; URSAKI, V. V.; PANTAZI, A.; MESTERCA, R.; BRÂNCOVEANU, O.; SHREE, Sindu; ADELUNG, R.; TIGINYANU, I. M.; ENACHESCU, M. (ELSEVIER, 2018)
    We report the fabrication and characterization of SnO2/CdTe and SnO2/GaAs core/shell microstructures. CdTe or GaAs shell layers were deposited by radio-frequency (RF) magnetron sputtering on core SnO2 microwires synthesized ...
  • PRISLOPSKI, S. Ya.; GAPONENKO, S. V.; MONAICO, E.; SERGENTU, V. V.; TIGINYANU, I. M. (Springer Nature Switzerland, 2018)
    Retroreflected light with strong linear polarization coinciding with that of the incident beams is detected from strongly absorbing nanoporous III–V semiconductors. Because of high polarization of retroreflected waves we ...
  • MONAICO, Ed.; MONAICO, E. I.; URSAKI, V. V.; TIGINYANU, I. M.; NIELSCH, K. (Springer Nature Switzerland, 2019)
    We report on the application of specially-designed masks for the purpose of electrochemical etching of InP single crystals which enables one to change in a controlled fashion the direction of propagation of pores, including ...
  • WOLFF, Niklas; JORDT, Philipp; BRANISTE, Tudor; POPA, Veaceslav; MONAICO, Eduard; URSAKI, Veaceslav; PETRARU, Adrian; ADELUNG, Rainer; MURPHY, Bridget M.; KIENLE, Lorenz; TIGINYANU, Ion (The Electrochemical Society, 2019)
    The nature of self-organized three-dimensional structured architectures with spatially modulated electrical conductivity emerging in the process of hydride vapor phase epitaxial growth of single crystalline n-GaN wafers ...
  • COJOCARI, O.; POPA, V.; URSAKI, V. V.; TIGINYANU, I. M.; MUTAMBA, K.; SAGLAM, M.; HARTNAGEL, H. L. (IEEE, 2004)
    Small-size Pt/n-GaN Schottky diodes are fabricated using electrochemical technique for anode metallisation. Effects of surface passivation and thermal annealing on the interface quality are studied using PL-measurements ...
  • LANGA, S.; CARSTENSEN, J.; CHRISTOPHERSEN, M.; FÖLL, H.; TIGINYANU, I. M. (Springer Nature Switzerland, 2005)
    The factors determining the morphology of electrochemically etched III–V compounds have been reviewed by Gomes and Goossens as well as by Notten et al. [1,2]. Under anodic conditions the p- and n-type materials were found ...
  • SIRBU, L.; SERGENTU, V.; URSAKI, V.; TIGINYANU, I.; PIREDDA, G.; BOYD, R. W. (IEEE, 2008)
    Surface plasmon resonance is studied for Ag nanoparticles electrochemically deposited on bulk GaP substrates and inside porous GaP templates. The size and density of Ag nanoparticles are controlled by the conditions of ...
  • TIGINYANU, I.; URSAKI, V.; POPA, V. (Woodhead Publishing, 2011)
    This chapter provides a review of nanoimprint lithography techniques, highlighting their potential to surpass photolithography in resolution, and, at the same time, to allow mass fabrication at a lower cost. The current ...
  • ENACHI, M.; STEVENS-KALCEFF, M.; BURLACU, A.; TIGINYANU, I.; URSAKI, V. (The Electrochemical Society, 2012)
    Cathodoluminescence and photoluminecsence are investigated in titanium dioxide nanotubes (TiO2 NTs) produced in an ethylene glycol based electrolyte with the variation of the temperature of the electrolyte which allows the ...
  • RADHANPURA, K.; LEWIS, R. A.; SIRBU, L.; ENACHI, M.; TIGINYANU, I. M.; SKURATOV, V. A. (IOP Publishing, 2014)
    Emission of terahertz (THz) electromagnetic radiation from heavily-doped (5 × 1018 cm−3) (100) and (111) InP bulk materials and nanoporous honeycomb membranes, irradiated with heavy noble gas (Kr and Xe) ions, is presented. ...
  • GAPONENKO, Sergey V.; MONAICO, Eduard; SERGENTU, Vladimir V.; PRISLOPSKI, Sergey Ya.; TIGINYANU, Ion M. (IOP Publishing, 2018)
    We report on anomalous light retroreflection from strongly absorbing nanoporous semiconductor materials, GaAs and InP, with strongly polarized retroreflected light with linear polarization coinciding with that of incident ...
  • POPA, Mihail; ZAKHIDOV, Anvar; TIGINYANU, Ion (Romanian Academy Publishing House, 2018)
    This work demonstrates the application of ZnS thin layers and the doped layers with ZnS in the perovskite solar cells. Electron transport layer has been used in three different forms. For solar cells with a single layer ...
  • MONAICO, Ed.; MOISE, C.; MIHAI, G.; URSAKI, V. V.; LEISTNER, K.; TIGINYANU, I. M.; ENACHESCU, M.; NIELSCH, K. (The Electrochemical Society, 2019)
    In this paper, we report on results of a systematic study of porous morphologies obtained using anodization of HVPE-grown crystalline GaN wafers in HNO3, HCl, and NaCl solutions. The anodization-induced nanostructuring is ...
  • BRANISTE, Tudor; ZHUKOV, Sergey; DRAGOMAN, Mircea; ALYABYEVA, Liudmila; CIOBANU, Vladimir; ALDRIGO, Martino; DRAGOMAN, Daniela; IORDANESCU, Sergiu; SHREE, Sindu; RAEVSCHI, Simion; ADELUNG, Rainer; GORSHUNOV, Boris; TIGINYANU, Ion (IOP Publishing, 2019)
    The electrodynamic properties of the first aero-material based on compound semiconductor, namely of Aero-GaN, in the terahertz frequency region are experimentally investigated. Spectra of complex dielectric permittivity, ...
  • TIGINYANU, I. M.; LANGA, S.; CHRISTOPHERSEN, M.; CARSTENSEN, J.; SERGENTU, V.; FOCA, E.; RIOS, O.; FÖLL, H. (Cambridge University Press, 2001)
    Porous layers and membranes representing 2D and 3D dielectric structures were fabricated on different III-V compounds (GaAs, InP, GaP) by electrochemical etching techniques. Nonlithographically fabricated ordered nanopore ...
  • SYRBU, N. N.; TIGINYANU, I. M.; URSAKI, V. V.; ZALAMAI, V. V.; POPA, Veaceslav; HUBBARD, S. M.; PAVLIDIS, Dimitris (Cambridge University Press, 2003)
    GaN layers grown on sapphire substrates were characterized using high resolution optical reflectivity and absorption spectroscopy in the region of ground and excited exciton states. The main exciton parameters are deduced ...
  • PRUNICI, Pavel; IRMER, Gert; MONECKE, Jochen; SIRBU, Lilian; TIGINYANU, Ion (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2005)
    Micro-Raman scattering spectra of bulk and porous GaAs and of individual nanocolumns were studied. The GaAs nanocolumns have radii of 50–100 nm and lengths between 5 and 25 µm. The experimental data are compared with the ...
  • NEDEOGLO, N. D.; NEDEOGLO, D. D.; SIRKELI, V. P.; TIGINYANU, I. M.; LAIHO, R.; LÄHDERANTA, E. (American Institute of Physics, 2008)
    Photoluminescence (PL) spectra are investigated in n-ZnSe single crystals at different temperatures from 4.4 to 300 K immediately after doping with Au from melt of Se+Au or Zn+Au and after storage of the doped samples for ...

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