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Autor Piqueras de Noriega, Javier |
Documentos disponibles escritos por este autor (322)
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Martínez Criado, Gema ; Segura Ruiz, Jaime ; Manh-Hung, Chu ; Tucoulou, Remi ; López García, Iñaki ; Nogales Díaz, Emilio ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Amer Chemical Soc | 2014-10Crossed nanowire structures are the basis for high-density integration of a variety of nanodevices. Owing to the critical role of nanowires intersections in creating hybrid architectures, it has become a challenge to investigate the local struct[...]texto impreso
A combined scanning electron microscope-scanning tunneling microscope (SEM-STM) system has been used to investigate surface topographic and electronic properties of YBa2Cu3O7-x (YBCO) and Bi2Sr2Ca-Cu2O8+x (Bi-2212) single crystals. Current imagi[...]texto impreso
Hidalgo Alcalde, Pedro ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Dutta, P.S. ; Dieguez, E. | Pergamon-Elsevier Science Ltd | 1998The effect of aluminium on the defect structure of GaSb crystals, grown by the vertical Bridgman technique, has been investigated by cathodoluminescence (CL) in the scanning electron microscope. Crystals have been found to be highly homogeneous [...]texto impreso
Castaldini, A. ; Cavallini, A. ; Fraboni, B ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | American Institute of Physics | 1998-02-15The deep levels present in semiconducting CdTe and semi-insulating CdTe:Cl and Cd0.8Zn0.2Te have been investigated by means of cathodoluminescence, deep level transient spectroscopy (DLTS), photo-induced current transient spectroscopy, and photo[...]texto impreso
Díaz-Guerra Viejo, Carlos ; Pal, U. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Akademie Verlag GMBH | 1995-01-16The effect of indentation on the cathodoluminescence (CL) of CdTe in the scanning electron microscope is investigated. Deformation produces deep level emission changes, in particular, a relative intensity increase of the 1.4 and 1.1 eV bands, ex[...]texto impreso
Díaz-Guerra Viejo, Carlos ; Kurdyukov, D.A. ; Piqueras de Noriega, Javier ; Sokolov, V. I. ; Zamoryanskaya, M. V. | American Institute of Physics | 2001-03-01Synthetic opals-composed of 250 nm amorphous silica spheres closed packed in a face centered cubic structure-have been infilled with silicon, platinum, and with Si and different Pt contents. The luminescent properties of these composites have be[...]texto impreso
Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier ; Castaldini, A. ; Cavallini, A. ; Polent, L. | American Institute of Physics | 2003-12-15The electronic recombination properties of Mg-doped GaN have been investigated by steady state and time-resolved cathodoluminescence (TRCL) in the scanning electron microscope, photocurrent (PC) spectroscopy, and optical beam induced current (OB[...]texto impreso
Castaldini, A. ; Cavallini, A. ; Fraboni, B ; Piqueras de Noriega, Javier ; Polenta, L. | IOP publishing ltd | 1996The influence of deep levels on the electrical and optical properties of semiconductors is widely acknowledged. We have utilized several complementary spectroscopic techniques to investigate the deep traps in undoped CdTe, CdTe:Cl and Cd0.8Zn0.2[...]texto impreso
Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Urbieta Quiroga, Ana Irene ; Rebane, Y. T. ; Shrete, Y. | IOP publishing ltd | 1999-05The influence of defects, in particular the deformation-induced defects, on the luminescence of bulk ZnSe single crystals has been investigated by cathodoluminescence (CL) in the scanning electron microscope. Deformation has been found to cause [...]texto impreso
Aleman, A. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Elsevier Science B.V. | 2010-10-15Dense vertical arrays of indium doped ZnO nanoplates have been grown by thermal treatment of compacted ZnS-In_2O_3 powders with 0.35 at% of In. The distribution of nanoplates is related to the grain structure of the substrate. Only a small conte[...]texto impreso
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Maestre Varea, David ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier | IOP publishing ltd | 2004-11Remote electron beam induced current (REBIC) and cathodoluminescence (CL) modes in the scanning electron microscope (SEM) have been used to investigate SnO2 sintered samples. The study of the electrically active boundaries present in the oxide s[...]texto impreso
Nogales Díaz, Emilio ; López, I. ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Lorenz, K. ; Alves, E. ; García, J.A. | Spie-Int Soc Optical Engineering | 2012Monoclinic gallium oxide, beta-Ga_2O_3, is a transparent conducting oxide (TCO) that presents one of the widest band gaps among this family of materials. Its characteristics make it highly interesting for applications in UV - visible - IR optoel[...]texto impreso
Nogales Díaz, Emilio ; García, José Angel ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Amer Inst Physics | 2007-09-24Er and Cr doped ß-Ga_2O_3 nano- and microwires have been grown by thermal treatments of Ga2O3 powder containing a fraction of Er_2O_3 powder or in the presence of Cr_2O_3 powder, respectively. Doping gives rise to the characteristic red photolum[...]texto impreso
López, I. ; Nogales Díaz, Emilio ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Spie-Int Soc Optical Engineering | 2014Ga_2O_3 bulk single crystals have been implanted with 300 keV Europium ions to fluences ranging from 1x10^(13) to 4x10^(15) at/cm^(2). The damage build-up and Eu-incorporation was assessed by Rutherford Backscattering Spectrometry in the channel[...]