Abstract
The influence of the porous structure of anodic alumina matrices on the structural and morphological properties of germanium nanostructures, obtained by high vacuum thermal deposition on anodic alumina, is reported. Scanning electron microscopy micrographs reveal the formation of Ge nanostructures in the form of rods and tubes with diameters from 16–130 nm and arrangements specified by the geometry characteristics of the porous matrix structure. X-ray diffraction and Raman scattering studies show the formation of nanostructures with structural states specified by the temperature of the substrate: the amorphous state at 200 °C and 300 °C, the mixed amorphous–crystalline state at 400 °C and the crystalline state at 500 °C. Germanium nanostructures with ordered distributions in the dielectric matrices are desired for application in optoelectronic devices.
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