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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
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[...]texto impreso
Díaz-Guerra Viejo, Carlos ; Montone, A. ; Piqueras de Noriega, Javier ; Cardellini, F. | IOP publishing ltd | 2002-01The structural and luminescent properties of nanocrystalline silicon produced by high-energy ball milling of Si single crystals have been investigated using transmission electron microscopy (TEM), x-ray diffraction (XRD) and cathodoluminescence [...]texto impreso
Nogales Díaz, Emilio ; Montone, A. ; Cardellin, F. ; Méndez Martín, Bianchi ; Piqueras de Noriega, Javier | IOP publishing ltd | 2002-12There. has been interest in the past years in the visible luminescence properties of germanium nanocrystals. Most of the previous works refer to Ge nanocrystals embedded in an oxide matrix. In this work nanocrystalline germanium has been prepare[...]
