Substitutional and surface Mn2+ centers in small cubic ZnS:Mn nanocrystals. A correlated EPR and photoluminescence study.
M. Stefan, S. V. Nistor, D. Ghica, C. D. Mateescu, M. Nikl and R. Kucerkova
Phys. Rev. B 83, 045301 (2011); DOI: 10.1103/PhysRevB.83.045301
Structural phase transformations in annealed cubic ZnS nanocrystals.
D. Ghica, S. V. Nistor, L. C. Nistor, M. Stefan and C. D. Mateescu
J. Nanopart. Res. 13(9) 4325-4335 (2011); DOI: 10.1007/s11051-011-0379-y
Accurate determination of the spin Hamiltonian parameters for Mn2+ ions in cubic ZnS nanocrystals by multifrequency EPR spectra analysis.
M. Stefan, S. V. Nistor and J.N. Barascu
J. Magn. Reson. 210, 200-09 (2011); DOI:10.1016/j.jmr.2011.03.004
Eu3+-doped CaF2 nanocrystals in sol–gel derived glass–ceramics
M. Secu, C.E. Secu, C. Ghica
Optical Materials 33, 613-617 (2011)
Laser treatment of plasma-hydrogenated silicon wafers for thin layer exfoliation
C. Ghica, L. C. Nistor, V. S. Teodorescu, A. Maraloiu, S. Vizireanu, N. D. Scarisoreanu, M. Dinescu
Journal of Applied Physics 109, 063518 (2011)
Solid-state synthesis and spark plasma sintering of SrZrO3 ceramics
B. Popescu, S. Enache, M. Valeanu, C. Ghica
Journal of Alloys and Compounds 509, 6395-6399 (2011)
Modification of AlN thin films morphology and structure by temporally shaping of fs laser pulses used for deposition
C. Ristoscu, C. Ghica, E.L. Papadopoulou, G. Socol, D. Gray, B. Mironov, I.N. Mihailescu, C. Fotakis
Thin Solid Films 519, 6381-6387 (2011)
Annealing of hydrogen induced defects in RF-plasma treated Si wafers: ex situ and in situ transmission electron microscopy studies
C. Ghica, L. C. Nistor, S. Vizireanu and G. Dinescu
Journal of Physics D: Applied Physics 44, 295401 (2011)
Rare-earth doped sol–gel derived oxyfluoride glass–ceramics: Structural and optical characterization
C.E. Secu, M. Secu , C. Ghica, L. Mihut
Optical Materials 33, 1770-1774 (2011)
Localization of Mn2+ ions in mesoporous ZnS.
S.V. Nistor, M. Stefan, L.C. Nistor, C.D. Mateescu and R. Birjega
J. Nanosci. Nanotechnol. 10, 6200-6205 (2010);
Lattice assisted incorporation of Mn2+ ions in cubic II-VI semiconductor quantum dots.
S. V. Nistor, M. Stefan, L. C. Nistor, D. Ghica, C. D. Mateescu and J. N. Barascu
IOP Conference Series: Materials Science & Engineering 15 (1), 012024 (2010); DOI:10.1088/1757-899X/15/1/012024
Multifrequency characterization of paramagnetic point defects in semiconducting cubic BN crystals.
S. V. Nistor, M. Stefan, D. Ghica and E. Goovaerts
Appl. Magn. Reson. 39(1-2), 87-101 (2010);
Improving the cubic ZnS nanocrystals quality by self-assembling into a mezoporous structure.
S. V. Nistor, L. Nistor, M. Stefan, D. Ghica, C. D. Mateescu and R. Birjega
Rom. Rep. Phys. 62(2), 319-28 (2010);
Specificity of defects induced in silicon by RF-plasma hydrogenation.
C. Ghica, L.C. Nistor, M. Stefan, D. Ghica, B. Mironov, S. Vizireanu, A. Moldovan and M. Dinescu
Appl. Phys. A-Mater. Sci. Process. 98, 777- 85 (2010);
Study of the Kramers rare earth ions ground multiplet with a large orbital contribution by multifrequency EPR spectroscopy: Ce3+ in PbWO4 scintillator.
F. F. Popescu, V. Bercu, J. N. Barascu, M. Martinelli, C. A. Massa, L. A. Pardi, M. Stefan, S. V. Nistor, M. Nikl
Opt. Mat. 32, 570-75 (2010);
Incorporationand localisation of substitutional Mn2+ ions in cubic ZnS quantum dots.
S. V. Nistor, M. Stefan, L. C. Nistor, E. Goovaerts and G. Van Tendeloo
Phys. Rev. B 81(3), 035336 (6 pp) (2010);
Organic photovoltaic cells based on ZnO thin film electrodes
C. Ghica, L. Ion, G. Epurescu, L. Nistor, S. Antohe, M. Dinescu
Journal of Nanoscience and Nanotechnology 10, 1322-1326 (2010)
Specificity of defects induced in silicon by RF-plasma hydrogenation
C. Ghica, L. C. Nistor, M. Stefan, D. Ghica, B. Mironov, S. Vizireanu, A. Moldovan, M. Dinescu
Applied Physics A 98, 777-785 (2010)
Hydrogen-plasma induced platelets and voids in silicon wafers
C. Ghica, L. C. Nistor, B. Mironov, S. Vizireanu
Romanian Reports in Physics 62, 329-340 (2010)
Doped aluminium based spinels synthesized by a soft chemistry method
I. Mindru, G. Marinescu, D. Gingasu, L. Patron, L. Diamandescu, C. Ghica, B. Mironov
Materials Science and Engineering B: Advanced Functional Solid-State Materials 170, 99-106 (2010)
Blue CoAl2O4 spinel via complexation method
I. Mindru, G. Marinescu, D. Gingasu, L. Patron, C. Ghica, M. Giurginca
Materials Chemistry and Physics 122, 491-497 (2010)
Adsorption complexes of collagenous polypeptide-ionic surfactant in aqueous medium. The influence of adsorption complexes of polypeptide-ionic surfactant on thermal stability of collagen type i
M. Micut, T. Staicu, D. Sulea, M. Leca and C. Ghica
Revue Roumaine de Chimie 55(8), 501-510 (2010)
Skin layer defects in Si by optimized treatment in hydrogen RF-plasma
C. Ghica, L. C. Nistor, S. Vizireanu, G. Dinescu, A. Moldovan, M. Dinescu
Plasma Processes and Polymers 7, 986-991 (2010)
Growth and structural characterization of Y0.6Lu0.4Ca4O(BO3)(3) new nonlinear crystal
L. Gheorghe, A. Achim, F. Voicu, C. Ghica
Optoelectronics and Advanced Materials-Rapid Communications 4, 1131-1134 (2010)
Growth and structural characterization of Y0.6Lu0.4Ca4O(BO3)(3) new nonlinear crystal
L. Gheorghe, A. Achim, F. Voicu, C. Ghica
Journal of Optoelectronics and Advanced Materials 12, 1680-1683 (2010)
Organic Photovoltaic Cells Based on ZnO Thin Film Electrodes
C.Ghica, L. Ion, G. Epurescu, L. Nistor, S. Antohe, M. Dinescu
Journal of Nanoscience and Nanotechnology, in press (2009)
Synthesis and characterization of Mn2+ doped ZnS nanocrystals self-assembled in a tight mesoporous structure.
S. V. Nistor, L. C. Nistor, M. Stefan, C. D. Mateescu, R. Birjega, N. Solovieva and M. Nikl
Superlattices Microstruct. 46, 306-311 (2009);
Study of the ground multiplet of Kramers rare earth ions in solid matrices by multifrequency EPR spectroscopy: Nd3+ in PbWO4 single-crystals.
F.F. Popescu, V. Bercu, J.N. Barascu, M. Martinelli, C.A. Massa, L.A Pardi, M. Stefan, S.V. Nistor, M. Nikl and P. Bohacek
J. Chem. Phys. 131, 034505 (7 pp) (2009);
In-depth investigation of Mn2+ ions EPR spectra in ZnS single crystals with pure cubic structure.
S.V. Nistor and M. Stefan
J. Phys.: Condens. Matter 21, 145408 (7pp) (2009);
Ultrafine particles of ZnGa2O4 obtained by solution combustion and complexation methods
D. Gingasu, I. Mindru, G. Marinescu, L. Patron and C. Ghica
Journal of Alloys and Compounds 481, 890-895 (2009)
Crystallization and spectroscopic properties of Eu-doped CaF2 nanocrystals in transparent oxyfluoride glass-ceramics
M. Secu, C.E. Secu, S. Polosan and C. Ghica
Journal of Non-Crystalline Solids 355, 1869-1872 (2009).
Adsorption complexes of collagenous polypeptide-ionic surfactant in aqueous medium
M. Micutz, T. Staicu, M. Leca, C. Ghica
Revue Roumaine de Chimie 54 , 1077–1095 (2009)
Fe-catalyzed carbon nanotubes growth on fluidized powders by remote radiofrequency plasma beam
S. Vizireanua, D. Stoica, R. Birjega, C. Ghica, V. Teodorescu, L. Nistor, R Ganea, G. Dinescu
Journal of Optoelectronics and Advanced Materials 10, 2056 - 2060 (2008)
Hybrid metal (gold)-inorganic (silica) nanoparticles: synthesis, characterization, and spin-labeling
P. Ionita, C. Ghica, M. T. Caproiu, G. Ionita
J. Inorg. Organomet. Polym. 18, 414–419 (2008)
Influence of polyvinylpyrolidone as an additive in electrochemical preparation of ZnO nanowires and nanostructured thin films
I. Enculescu, E. Matei, M. Sima, M. Enculescu, M. Sima, C. Ghica
Surface and Interface Analysis 40, 556-560 (2008)
Revealing nanoscale structural ordering by TEM/HRTEM. Application on PMN-PT relaxor ferroelectric
C. Ghica, L. Nistor, G. Van Tendeloo
J. Optoelectron. Adv. Materials, Iss. 9, 2328-2333 (2008)
Dual behavior of gold nanoparticles, as generators and scavengers for free radicals
P. Ionita, F. Spafiu, C. Ghica
J. Mater. Sci. 43, 6571–6574 (2008)
Electrochemical growth and characterization of nanostructured ZnO thin films
C. Ghica, I. Enculescu, L.C. Nistor, E. Matei and G. Van Tendeloo
J. Optoelectron. Adv. Materials 10, 3237-3240 (2008)
Functional ZnO thin films obtained by radiofrequency beam assisted pulsed laser deposition
G. Epurescu, N. D. Scarisoreanu, D. G. Matei, G. Dinescu, C. Ghica, L. C. Nistor, M. Dinescu.
Romanian Reports on Physics 60 (3), pp. 807-814 (2008)
TEM characterization of extended defects induced in Si wafers by H plasma treatment
C. Ghica, L. C. Nistor, H. Bender, O. Richard, G. Van Tendeloo, A. Ulyashin
Journal of Physics D: Applied Physics 40, 395-400 (2007).
Nanocrystalline Er:YAG thin films prepared by pulsed laser deposition: An electron microscopy study
D. Stanoi, A. Popescu, C. Ghica, G. Socol, E. Axente, C. Ristoscu, I. N. Mihailescu, A. Stefan, S. Georgescu
Applied Surface Science 253, 8268–8272 (2007)
Mesoscopic ordering in the 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 relaxor ferroelectric
L.C. Nistor, C. Ghica and G. Van Tendeloo
Phys. Stat. Sol. (c), 4 (3) 736-739 (2007)
Varieties of nanostructured carbon grown by expanding radiofrequency plasma beam
S. Vizireanu, B. Mitu, G. Dinescu, L. Nistor, C. Ghica, A. Maraloiu, M. Stancu and G. Ruxandra
Journal of Optoelectronics and Advanced Materials 9, 1649-1652 (2007)
Paramagnetic silica-coated gold nanoparticles
C. Ghica, P. Ionita
J. Mater. Sci. 42, 10058-10064 (2007)
Probing cellulose wettability by electron paramagnetic resonance
G. Ionita, C. Ghica, P. Ionita
Materials Science-Poland, Vol. 25, No. 4, 1011-1017 (2007)
Preparation of metallic nanowires with magnetic properties using the template method
I. Enculescu, M. Sima, M. Enculescu, C. Ghica, M. Enache
Journal of Optoelectronics and Advanced Materials 9, 1468-1470 (2007)
p-type ZnO thin films grown by RF plasma beam assisted pulsed laser deposition
G. Epurescu, G. Dinescu, A. Moldovan, R. Birjega, F. Dipietrantonio, E. Verona, P. Veradi, L.C. Nistor, C. Ghica, G. Van Tendeloo and M. Dinescu
Superlattices and Microstructures, 42 (1-6) 79-84 (2007)
Growth and characterization of -SiC films obtained by fs laser ablation
C. Ghica, C. Ristoscu, G. Socol, D. Brodoceanu, L. C. Nistor, I. N. Mihailescu, A. Klini, C. Fotakis
Appl. Surf. Sci. 252, 4672-4677 (2006).
Femtosecond pulse shaping for phase and morphology control in PLD: Synthesis of cubic SiC
C. Ristoscu, G. Socol, C. Ghica, I. N. Mihailescu, D. Gray, A. Klini, A. Manousaki, D. Anglos, C. Fotakis
Appl. Surf. Sci. 252, 4857-4862 (2006).
Characterization of {111} planar defects induced in silicon by hydrogen plasma treatments
C. Ghica, L. C. Nistor, H. Bender, O. Richard, G. Van Tendeloo, A. Ulyashin
Philosophical Magazine 86, 5137-5151 (2006)
EPR and TEM characterizationa of electroluminescent Alq3
M. N. Grecu, C. Ghica, A. Mirea, V. V. Grecu, M. Schwoerer
Materials Science Forum 514-516, 133-137 (2006).
Growth and characterization of a-axis textured ZnO thin films
L. C. Nistor, C. Ghica, D. Matei, G. Dinescu, M. Dinescu, G. Van Tendeloo
Journal of Crystal Growth 277, 26-31 (2005).
Properties of ZnO thin films prepared by radio-frequency plasma beam assisted laser ablation
N. Scarisoreanu, D.G. Matei, G. Dinescu, G. Epurescu, C. Ghica, L.C. Nistor and M. Dinescu
Applied Surface Science 247 (1-4), 518-525 (2005)
. Paramagnetic defect centers in crystalline Alq3
M.N. Grecu, A. Mirea, C. Ghica, M. Cölle, M. Schwoerer
J. Phys.: Condens. Matter. 17, 6271-6283 (2005).
Microstructural characterization of polycrystaline Alq3 grown by sublimation
C. Ghica, M. N. Grecu, J. Gmeier, V. V. Grecu
Journal of Optoelectronics and Advanced Materials Vol. 7, No. 6, 2997-3003 (2005)
Nanostructure and properties of Pb(Zr,Ti)-Pb(Ni1/3Nb2/3) piezoceramics
E. Dimitriu, F. Craciun, C. Ghica, R. Ramer
J.Phys. IV France 128, 139-143 (2005).
Strain mapping arround dislocations in diamond and cBN
B. Willems, L. C. Nistor, C. Ghica, G. Van Tendeloo
Physica Status Solidi (a) Vol. 202, Iss. 11, 2224-2228 (2005).
Synthesis of advanced materials by pulsed-laser deposition
I. Vrejoiu, D. G. Matei, J. D. Pedarnig, D. Bauerle, C. Ghica, M. Dinescu
Photon Processing in Microelectronics and Photonics IV 5713, 456-463 (2005).
Modification of polyester track membranes by plasma treatments
A. Lazea, L. I. Kravets, B. Albu, C. Ghica, G. Dinescu
Surface & Coatings Technology 200 (1-4), 529-533 (2005)
