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Autor Piqueras de Noriega, Javier |
Documentos disponibles escritos por este autor (322)
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Bazta, Otman ; Urbieta Quiroga, Ana Irene ; Piqueras de Noriega, Javier ; Fernández Sánchez, Paloma ; Addou, M. ; Calvino, J.J. ; Hungría, A.B. | Elsevier Science Ltd | 2019-04-15This study reports on the deposition of highly transparent, n-type ZnO thin films on glass substrate at 450 C using spray pyrolysis processing, with the simultaneous insertion of yttrium (Y) at different percentages (0, 2, 5, 7 at%) as a dopant.[...]texto impreso
Cremades Rodríguez, Ana Isabel ; Narayanan, V.C. ; Piqueras de Noriega, Javier ; Lima, A.P. ; Ambacher, O. ; Stutzmann, M. | American Institute of Physics | 2001-11-01Plasma-induced molecular beam epitaxial AlInGaN heterostructures have been characterized by spatial resolved cathodoluminescence and x-ray energy dispersive microanalysis. Competitive incorporation of Al and In has been observed, with the format[...]texto impreso
Castaldini, A. ; Cavallini, A. ; Fraboni, B. ; Piqueras de Noriega, Javier | Elsevier Science SA | 1994-12The disappearance of the electron trap at E_t=E_c-0.82 eV (EL2) level in highly doped samples, observed in the literature for N_D-N_A> 1x10^17 cm^(-3) has been assessed by junction spectroscopy investigations of liquid-encapsulated Czochralski G[...]texto impreso
Vila, Mercedes ; Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier | Amer Inst Physics | 2012-08-13The ?-Bi_2O_3 to ?- Bi_2O_3 phase transformation has been locally induced by laser irradiation in ceramic samples and single-crystal nanowires of this oxide. The threshold power densities necessary to induce this transformation, as well as the [...]texto impreso
Piqueras de Noriega, Javier ; Vila Santos, María ; Díaz-Guerra Viejo, Carlos | Amer Inst Physics | 2012-08-13The ?-Bi_2O_3 to ?-Bi_2O_3phase transformation has been locally induced by laser irradiation in ceramic samples and single-crystal nanowires of this oxide. The threshold power densities necessary to induce this transformation, as well as the cor[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Piqueras de Noriega, Javier ; Fernández Sánchez, Paloma | Amer Inst Physics | 1991-01-21Near-infrared cathodoluminescence (CL) in the scanning electron microscope has been used to characterize GaP:S. Spectra of as-grown crystals show a broadband at about 1240 nm, probably related to P(Ga) antisite defects. This emission has been fo[...]texto impreso
Piqueras de Noriega, Javier ; Vila Santos, María ; Díaz-Guerra Viejo, Carlos | Elsevier Science SA | 2012-03-15Cathodoluminescence in the scanning electron microscope and photoluminescence in a confocal microscope have been used to investigate the luminescence properties of the stable monoclinic ?-phase of Bi_2O_3. Powders of this oxide have been sintere[...]texto impreso
Alemán Llorente, Belén ; Piqueras de Noriega, Javier ; Fernández Sánchez, Paloma ; García Martínez, José Ángel | Academic Press Ltd - Elsevier Science Ltd | 2013-04Luminescence of Zn_4In_2O_7 nanobelts and microplates synthesized by a thermal evaporation-deposition method, has been investigated by photoluminescence (PL) and cathodoluminescence (CL) in the scanning electron microscope (SEM). Time resolved a[...]texto impreso
Domínguez-Adame Acosta, Francisco ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Prieto, P. | American Institute of Physics | 1992-03-15Visible and near infrared cathodoluminescence of Bi_2Sr_2CaCu_2O_x and YBa_2Cu_3O_(7-x) films is investigated in the scanning electron microscope. In particular, possible analogies in the cathodoluminescence of both systems have been analyzed. T[...]texto impreso
Nogales Díaz, Emilio ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Plugaru, R ; Garcia, J. A. ; Tate, T. J. | Materials Research Society | 2002The luminescence properties of erbium oxide grown on crystalline and amorphous silicon substrates were studied by means of photo- and cathodoluminescence techniques. Differences in the luminescence spectra for samples grown on the two type., of [...]texto impreso
Zaldivar, M.H. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | American Institute of Physics | 1998-01-01Cathodoluminescence (CL) in the scanning electron microscope is used to investigate the nature of defects responsible for the luminescence associated with round and hexagonal-like topographic features of GaN:Si films. Round hillocks of the size [...]texto impreso
Chioncel, M. F. ; Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier | IOP publishing ltd | 2004-03Cathodoluminescence in the scanning electron microscope has been used to investigate the effect of plastic deformation, produced by indentation, in Te-doped GaSb crystals. Deformation has been found to cause a strong quenching of the luminescenc[...]texto impreso
Gómez, P. ; Piqueras de Noriega, Javier ; Remon, A. ; Garcia, J. A. ; Jiménez, J. ; Torres, A. | Wiley-V C H Verlag Gmbh | 1996-10-16The effect of vacuum thermal annealing and electron irradiation on the luminescence of Bi_2Sr_2CaCu-2O_x ceramics has been investigated by cathodoluminescence (CL) in the scanning electron microscope (SEM), time-resolved photoluminescence (PL), [...]texto impreso
Radoi, R. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Wiggins, M. S. ; Solís, J. | IOP publishing ltd | 2003-07The effect of mechanical milling on the luminescence properties of ZnO microcrystalline samples has been studied by means of cathodoluminescence in a scanning electron microscope. The samples consisted of pressed pellets of commercially availabl[...]texto impreso
Radoi, R. ; Andrés, M. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Wiley-V C H Verlag Gmbh | 2004-11ZnSe powder has been ball milled in different conditions to investigate the formation of a nanocrystalline structure. The effect of mechanical milling on the luminescent and structural properties of ZnSe has been studied by means of cathodolumin[...]