Formation of CdTe and CdO Nanocrystals During Chemical Deposition in SiO2/Si Track Templates

Abstract

This paper presents the results of the study of CdTe nanoclusters obtained by chemical deposition using a sulfate solution. SiO2/Si track templates were used as nanoporous templates. The а-SiO2/Si-n track template was obtained by irradiation with xenon ions with the energy of 200 MeV, with fluences of 10 7 –10 8 ions/cm2. The surface of the deposited samples was examined using a JSM 7500F scanning electron microscope. To identify the crystal structure of CdTe nanoclusters, an X-ray structural analysis was performed, showing that cadmium telluride nanocrystals of the hexagonal phase (wurzite) are forming together with the amorphous phase. The calculations of crystallite sizes showed that after annealing of CdTe samples at a temperature of 100°C, nanocrystallites change and the degree of crystallinity increases with the amorphous phase dominating.