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Iribarren, A. ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Academic Press Ltd- Elsevier Science Ltd | 2008-05ZnTe- and TeO_2-doped ZnO nanostructures and microstructures were obtained by a vapour-solid process by sintering compacted ZnO powder mixed with each precursor. Cathodoluminescence (CL) measurements show that if TeO_2 is used, then the defect b[...]texto impreso
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[...]texto impreso
Nogales Díaz, Emilio ; Sánchez, B. ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Academic Press Ltd- Elsevier Science Ltd | 2009-04Isoelectronic (In, Al) doped gallium oxide nanowires have been grown by a vapour solidification process. XRD and TEM were used for their structural characterization. The morphology and optical properties of the In(Al)-doped Ga_2O_3 nanowires hav[...]texto impreso
Herrera, M. ; Cremades Rodríguez, Ana Isabel ; Stutzmann, M. ; Piqueras de Noriega, Javier | Academic Press Ltd- Elsevier Science Ltd | 2009-04Mn doped GaN films have been studied by conductive Atomic Force Microscopy (AFM), Cathodoluminescence (CL) and Electron Beam Induced Current (EBIC). AFM measurements revealed the presence of pinholes with diameters between 130 and 380 nm. The di[...]texto impreso
Herrera, M. ; Cremades Rodríguez, Ana Isabel ; Stutzmann, M. ; Piqueras de Noriega, Javier | Academic Press Ltd- Elsevier Science Ltd | 2009-04Mn doped GaN films have been studied by conductive Atomic Force Microscopy (AFM), Cathodoluminescence (CL) and Electron Beam Induced Current (EBIC). AFM measurements revealed the presence of pinholes with diameters between 130 and 380 nm. The di[...]texto impreso
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Magdas, D.A. ; Malestre, D. ; Cremades Rodríguez, Ana Isabel ; Gregorati, Luca ; Piqueras de Noriega, Javier | Academic Press Ltd- Elsevier Science Ltd | 2009-04In this work sintered thick microcrystalline films as well as micro and nanostructures of In(2)O(3) have been studied. The results obtained by XPS microscopy show that the boundary regions of the microcrystalline films present a higher amount of[...]
