Investigation of CU2ZnSn(S, Se)4 Solar Cells Fabricated Through Aqueous Non-Vacuum Spray Deposition

Kesterite Cu2ZnSn(S, Se)4 (CZTSSe)- based solar cells have grown in popularity as an alternative to copper indium gallium selenide (CIGS) due to their outstanding features, such as low toxicity, cost-effectiveness, acceptable optoelectrical properties, and abundant materials. Our research focuses on spray coating, which is believed to be one of the most viable scalable techniques. In this work, we have employed a simple and cost-effective built-in spray coating to synthesize a phase-pure CZTSSe. Further research is required to gain an in-depth understanding of the spray coating process for CZTSSe solar cells, which is the objective of this work. This paper presents a comparative study of the devices' properties and performance between spray and spin coating, which is our standard fabrication system. It also provides different characterizations of the morphological, structural, and optoelectronic properties of CZTSSe absorbers and devices.