GROWTH AND LUMINESCENCE OF ELONGATED MICRO- AND NANOSTRUCTURES OF OXIDE SEMICONDUCTORS

摘要

Sintering of SnO_2, ZnO and Ga_2O_3 powders under argon flow leads to the formation of different elongated micro and nanostructures on the sample surface. Nanowires have been grown on the three materials investigated, while in the case of SnO_2. tubes were also obtained. The samples have been characterized by scanning electron microscopy (SEM) and by cathodoluminescence in the SEM. The nanostructures show different luminescence properties than the sample background. The luminescence properties of the elongated structures are discussed.