Characteristics Study of Nanostructured CdO Prepared by Spray Pyrolysis

Abstract

ABSTRACT. In this paper, nanostructured cadmium oxide films were prepared by chemical spray pyrolysis technique.The structural, morphological and optical characteristics of synthesized films are investigated as function of concentration .AFM results revealed that the root mean square of surface roughness is increased with cadmium concentration. XRD investigation confirmed that the films are polycrystalline with cubic structure. SEM study displayed that the synthesized films have particle size in the range of 25-100nm depending on cadmium ion concentration. The optical properties revealed the films have maximum average optical transmittance of 78% for film sprayed with 0.1 M. The optical band gap of the CdO film prepared with 0.25 M was 2.65eV. The optical band gap increased as the film molarity .

Cobalt Effect on the Growth of Cadmium Oxide Nanostructure Prepared by Spray Pyrolysis Technique

“…These peaks show a variation in their intensity with a strong, sharp peak toward a plane (111), that is a property possessed by high crystallization material and it is representing the preference for crystalline development, agrees with the results obtained by (16,18). The reason for the preference for film growth at the (111) peak is that the energy of the surface density of this orientation is lower than other crystalline orientations (19). However, by increasing Co concentration, the CdO (111) orintation becomes more prominent.…”