Ultrasonic Spray Deposited CdS-GO Composite Films for Solar Cell Applications

Abstract

In the present study, the synthesis and characterization of cadmium sulfide (CdS) and graphene oxide (GO) composite films are investigated. These films have the potential to be utilized in solar cell applications due to their unique optical and electric properties. A chemical bath deposition was used to prepare the CdS thin films, while the hammer method was used to synthesize GO sheets. In this comparative study, spray deposition was used to prepare CdS-GO composite films with different ratios of CdS to GO. The spray deposition method used in this study offers a simple and cost-effective way to prepare large-area films for practical applications. The structural, and optical, properties of the composite films were characterized using X-ray diffraction, scanning electron microscopy, and UV-Vis spectroscopy measurements. The results show that the CdS-GO composite films exhibit enhanced optical properties as compared to the pure CdS films. The band gap energy of the composite films decreased with increasing GO content, indicating improved optical properties. These findings suggest that CdS-GO composite films have the potential for use in solar cell applications. I-V characteristics were obtained using a solar cell tester kit to analyse the applications of fabricated conducting films in the field of solar cells.