Información del autor
Autor Piqueras de Noriega, Javier |
Documentos disponibles escritos por este autor (322)
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Urchulutegui, M. ; Gómez, P. ; Piqueras de Noriega, Javier ; Dworschak, F. | Elsevier Science SA | 1994-05The effect of irradiation with 2.5 MeV electrons on InP single crystals is investigated by cathodoluminescence (CL) in the scanning electron microscope. Irradiation causes changes in the CL spectra but no luminescence band can be associated with[...]![]()
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Hidalgo Alcalde, Pedro ; Plaza, J. L. ; Méndez Martín, Bianchi ; Dieguez, E. ; Piqueras de Noriega, Javier | Institute of Physics | 2002-12-16The luminescence of Te-doped GaSb crystals codoped with Er2O3 has been studied by means of cathodoluminescene (CL) using a scanning electron microscope. Doping with erbium oxide causes a substantial increase of the luminescence intensity of the [...]![]()
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Plugaru, R. ; Craciun, G. ; Nastase, N. ; Méndez Martín, Bianchi ; Cremades Rodríguez, Ana Isabel ; Piqueras de Noriega, Javier ; Nogales Díaz, Emilio | Kluwer Academic Publishers | 2000-01Luminescence emission of LPCVD polycrystalline silicon films has been studied by cathodoluminescence (CL) in the scanning electron microscope. As-deposited films show visible luminescence with dominant blue band. The relative intensity of blue e[...]![]()
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Cathodoluminescence of porous silicon after mechanical damage with a tip has been studied in the scanning electron microscope. Mechanical damage results in the exposure of new surfaces related to fracture and to small particles appearing over th[...]![]()
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Piqueras de Noriega, Javier ; Méndez Martín, Bianchi ; Plugaru, R. ; Craciun, G. ; Garcia, J. A. ; Remon, A. | Springer | 1999-03Luminescence emission of nanocrystalline silicon films has been studied by cathodoluminescence (CL) in the scanning electron microscope. As-deposited films show a dominant band at 400 nm as well as a band centered at about 650 nm. CL spectra of [...]![]()
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Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Plugaru, R ; Craciun, G. ; Nastase, N. ; Cremades Rodríguez, Ana Isabel ; Nogales Díaz, Emilio | Trans Tech-Scitec Publications LTD | 1998Luminescence emission of nanocrystalline silicon films has been studied by cathodoluminescence (CL) in the scanning electron microscope. As deposited films show visible luminescence with dominant blue band as well as a red band. The evolution of[...]![]()
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Díaz-Guerra Viejo, Carlos ; Montone, A. ; Piqueras de Noriega, Javier ; Cardellini, F. | Trans Tech Publications Ltd | 2000Mechanical milling is a technique extensively used to prepare nanocrystalline metallic materials but it has been less frequently applied to semiconductors. The preparation of nanocrystalline silicon by different methods is a subject of increasin[...]![]()
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Aceves, R. ; Perez Sala, R. ; Barboza Flores, M. ; Pal, U ; Zaldivar, M.H. ; Piqueras de Noriega, Javier | Taylor & Francis Ltd | 2001Spectral cathodoluminescence of KCl:EU2+ (0.2% wt) crystals has been measured at different temperatures. In the 80-300 K temperature range the luminescence consists of three main broad emission bands with maxima around 418, 452, and 619nm. Based[...]![]()
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Díaz-Guerra Viejo, Carlos ; Mitric, A. ; Piqueras de Noriega, Javier ; Duffar, T. | Academic Press Ltd- Elsevier Science Ltd | 2009-04Cathodoluminescence (CL) in the scanning electron microscope and wavelength dispersive X-ray microanalysis (WDX) have been used to assess the homogeneity of a whole Te-doped In_xGa_(1-x)Sb ingot grown by the vertical Bridgman method under an alt[...]![]()
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Pal, U. ; Piqueras de Noriega, Javier ; Serrano, M. D. ; Sochinskii, N. V. | Springer Verlag | 1995-12CathodoLuminescence studies (CL) have been carried out on red mercuric-iodide (?-HgI_2) crystals and platelets grown by the vapor transport method. Panchromatic CL images revealed inhomogeneous distribution of growth-induced dislocations and ter[...]![]()
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Fernández Sánchez, Paloma ; Garcia, J. A. ; Remon, A ; Piqueras de Noriega, Javier ; Muñoz, V. ; Triboulet, R. | IOP publishing ltd | 1998-04ZnTe single crystals grown by the cold travelling heater method have been investigated by means of photo-and cathodoluminescence. The spectral region covered in this work ranges from 2.48 eV (500 nm) which corresponds to band-edge emission to 0.[...]![]()
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Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier ; Tomashpolsky, Y. Y. ; Sadovskaya, N. V. | Akademie Verlag GMBH | 1996-06-16Cathodoluminescence (CL) and secondary electron emission (SEE) in the scanning electron microscope have been used to study the effects of mechanical polishing and electron irradiation on YBa2Cu3O7-x ceramics. CL spectra from the mechanically pol[...]![]()
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Díaz-Guerra Viejo, Carlos ; Piqueras de Noriega, Javier ; Volciuc, O. ; Popa, V. ; Tiginyanu, I. M. | American Institute of Physics | 2006-07-15Cathodoluminescence (CL) microscopy and spectroscopy have been used to investigate the optical properties of GaN microstructures patterned by Ar+ ion irradiation and subsequent photoelectrochemical (PEC) etching. Monochromatic CL images and CL s[...]![]()
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Cathodoluminescence (CL) microscopy and spectroscopy have been used to investigate the nature and spatial distribution of defects and impurities in n-type epitaxial 4H-SiC. CL microscopy reveals the existence of 6H-SiC polytype inclusions, while[...]![]()
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Hidalgo Alcalde, Pedro ; Piqueras de Noriega, Javier ; Sirbu, L. ; Tiginyanu, M. | IOP publishing ltd | 2005-12The luminescence of porous InP prepared by electrochemical etching is investigated by cathodoluminescence (CL) in a scanning electron microscope (SEM). Anodization causes a strong reduction of CL intensity as well as a blue spectral shift. Addit[...]