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Alonso Orts, Manuel ; Sánchez, A. M. ; López, I. ; Nogales Díaz, Emilio ; Piqueras de Noriega, Javier ; Méndez Martín, Bianchi | RSC Royal Society of Chemistry | 2017-11-07In this work, a simple thermal evaporation method has been used to obtain a variety of Ga?O?/SnO? nano-assemblies with different shapes and dimensionalities, which may affect their physical properties, especially those influenced by surface prop[...]texto impreso
Fernández Sánchez, Paloma ; Díaz-Guerra Viejo, Carlos ; López García, María Luisa ; Urbieta Quiroga, Ana Irene ; Nogales Díaz, Emilio ; Arias Velasco, Marta ; Romero Izquierdo, Carlos ; Solís Fernández, Fernando ; Sotillo Buzarra, Belén | 2019-10-31El presente proyecto aborda dos aspectos muy importantes y estrechamente ligados a la adquisición de competencias básicas de cualquier titulación de grado actual y altamente demandadas por los empleadores: la adquisición de habilidades para desa[...]texto impreso
Nogales Díaz, Emilio ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Elsevier Science BV | 2011-07Cathodoluminescence (CL) of Ga2O3 nanowires and planar microstructures has been studied in a scanning electron microscope, as a function of the orientation angle of the structures relative to the position of the light detection system in the mic[...]texto impreso
Nogales Díaz, Emilio ; Montone, A. ; Cardellini, F. ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | natl Inst Optoelectronics | 2002-12The processes of the characteristic radiative transition of Er3+ ions involved in optically active centers in nano-crystalline silicon have been studied by photo-luminescence (PL) and cathodo-luminescence (CL). Infrared emission is observed in c[...]texto impreso
Nogales Díaz, Emilio ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | Amer Inst Physics | 2005-03-14ß-Ga_2O_3 nano- and microwires with diameters ranging from tens of nanometers to about one micron and lengths of up to tens of microns, have been obtained by sintering Ga_2O_3 powder under argon flow. The structures have been investigated by cat[...]texto impreso
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[...]texto impreso
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[...]texto impreso
Wang, K. ; Martin, R. W. ; Nogales Díaz, Emilio ; Edwards, P. R. ; O’Donnell, K. P. ; Lorenz, K. ; Alves, E. ; Watson, I. M. | American Institute of Physics | 2006-09-25AlInN layers implanted with europium and erbium ions are systematically studied and compared with similarly implanted GaN. Cathodoluminescence from four series of annealed samples shows that the Eu/Er emissions from AlInN are considerably broade[...]texto impreso
Nogales Díaz, Emilio ; Hidalgo Alcalde, Pedro ; Lorenz, K. ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier ; Alves, E. | IOP publishing ltd | 2011-07-15Rare earth (RE) doped gallium oxide and germanium oxide micro- and nanostructures, mostly nanowires, have been obtained and their morphological and optical properties have been characterized. Undoped oxide micro- and nanostructures were grown by[...]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
Comparative studies have been carried out on the cathodoluminescence (CL) and photoluminescence (PL) properties of GaN implanted with Tin and GaN co-implanted with Tin and a low concentration of Er. Room temperature CL spectra were acquired in [...]texto impreso
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
Alonso Orts, Manuel ; Nogales Díaz, Emilio ; Méndez Martín, Bianchi ; Rigby, Oliver M. ; Stamp, Alice V. ; Hindmarsh, Steve A. ; Sánchez, Ana M. | IOP Publishing | 2019-02-01beta-Ga_2O_3 intergrowths have been revealed in the SnO_2 rutile structure when SnO_2/Ga_2O_3 complex nanostructures are grown by thermal evaporation with a catalyst-free basis method. The structure is formed by a Ga_2O_3 nanowire trunk, around [...]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[...]
