Tin-zinc–oxide multiphase existence prepared by spray pyrolysis

Tin–zinc oxide nanocomposites (SZO) with different Sn ratios (0.1, 0.2, 0.3 and 0.4) were deposited on glass substrates by spray pyrolysis technique from chlorides aqueous solution. The phases existence for the prepared thin films were examined at deposition temperature of 500 °C. The fabricated nano composites showed polycrystalline structure of mixed phases. The phase existence depends according to the molar ratio of the started solution. The sample prepared at low Sn ratio appeared as hexagonal structure of ZnO phase indicate on that Sn atoms soluble within the ZnO lattice. Increase the Sn atoms content to a moderate ratio cause to appearance of additional ternary phase of Zn2SnO4. Increasing Sn to high ratio leads to appear of the SnO2 phase. So, the appearance of any definite phase of the Zn-Sn-O ternary composite depend on the atomic ratio of Zn: Sn. The FESEM images for the SZO samples show high porosity structure compose from spherical shape nanoparticles uniform size of one modal. Increasing the Sn molar ratio cause to execute to appearance of particles of two modals indicate the mixed phases. The current results suggest that our synthesized SZO Nano composite an effective layer of homogeneous distribution and high porosity, of phases depend on the started ratio which can used in different applications.