Optimizing Sb2Se3 thin-film solar cells: A comprehensive simulation study of multiple influential factors

Abstract

This article presents a comprehensive simulation study of Sb2Se3-based thin-film solar cells, exploring critical parameters that influence their performance and efficiency. We demonstrate that tuning the Sb2Se3 thickness offers a versatile approach to optimize light absorption and charge transport, offering promising avenues for efficiency enhancement. Furthermore, we highlight the pivotal role of carrier concentration variation in balancing carrier mobility and recombination, enabling fine-tuned control over device performance. Investigating the work function values of back contact metals uncovers crucial insights into open-circuit voltage, short-circuit current, and efficiency. Temperature effects are examined, emphasizing the need for effective thermal management strategies to ensure stable and efficient operation over a wide range of environmental conditions. The study underscores the significance of the HTL in improving charge carrier collection and reducing recombination losses. Lastly, our exploration of cadmium-free design underscores the industry's commitment to sustainable and environmentally friendly photovoltaic technologies. Overall, this simulation study advances our understanding of Sb2Se3-based solar cells and offers valuable guidance for optimizing their performance, ultimately contributing to the development of efficient and eco-friendly renewable energy solutions. Post-optimization, our findings indicate an impressive efficiency of 23.39%, with a noteworthy efficiency level of 23.02% achieved for cadmium-free solar cell configurations.