CdSe capped with Tri sodium citrate (TSC), nanoparticles were organized by chemical process at ambient conditions. Spin casting technique was used to deposit thin films on substrates from glass at room temperature. Schottky junctions have been fabricated by depositing CdSe thin films using the spin coating on Aluminum (Al) and Florien Tin Oxide (FTO) coated glass substrates and their properties have been investigated by current–voltage measurements. The characteristics obey the pure thermionic emission theory and the contact showed a good rectifying behavior in both structures.

In this paper, CdZnS nanocrystalline films have been deposited by using chemical bath deposition (CBD) technique on glassy substrates. After deposition process, the films were annealed at different period of time (30, 60 and 120 minute) using thermal furnace. Optical properties of CdZnS films such as absorbance and optical band gap, have been investigated. From this measurements, the bandgaps energies were found to be 3 eV, 2.69 eV, 2.5 eV and 2.2 eV for (0, 30, 60 and 120 minute) respectively. The optical energy gap decreased as the annealing time increased. In this study, the influence of annealing time on the structure, optical, and surface properties of CdZnS thin films was examined, and the results were thoroughly discussed. This demonstrates their potential applicability in optoelectronic and photovoltaic devices, among other things.