The influence of the annealing treatment on the kinetics of the electron trapping processes in CdS thin films has been investigated using the contactless time-resolved microwave photoconductivity technique (TRMC) in 9 GHz band. The thin (<200 nm) CdS films were synthesized using two techniques: by the chemical deposition from the solution (CBD method) and by the pyrolysis of the aerosols of the aqueous solutions of the thiourea coordination compounds of cadmium (Cd(thio)2Cl2) on a heated substrate. Annealing in both the air and the nitrogen atmospheres resulted in an increase of the amplitude and characteristic decay time of the photoresponse. Two particular effects caused by the annealing treatments were observed: the structural improvement and the energy redistribution of the electron traps.

The influence of the potentials and time of electrochemical deposition from ethanol solutions on the phase composition, structure, optical properties, and adhesion of the nanocrystalline CuInSe 2 (CIS) films has been investigated. The range of the potentials in which single-phase CIS thin films form with the best adhesion is defined based on X-ray diffraction (XRD) and atomic force microscopy (AFM). The size of the coherent scattering region is estimated according to XRD as 6 nm. Using AFM measurements, it is revealed that the films consist of conglomerates (∼200 nm) of nanoparticles, and the size (<10 nm) is dependent on time and deposition potential. The band gap width of the synthesized single-phase films, estimated on the optical absorption spectra, is about 1.5 eV.