Influence of technological conditions on the properties of CBD CdS layers

This work evaluates the efficacy of the chemical bath deposition (CBD) and technological conditions for preparation of homogeneous CdS thin films with high transparency and low resistivity. The effects of various technological parameters (magnetic agitation of solution, pre-treatment in vacuum, annealing in hydrogen atmosphere, and concentration of chlorine as dopant in the deposition bath) on morphology, transmittance and electrical properties were studied. Together, these results show that CBD is an efficient technique, helpful for the scaling-up of the manufacturing process of suitable and reproducible window n-type CdS layers for further solar cell application.