Evaluation of Annealing Temperature on the Properties of AgBiS₂

In recent decades, a form of sustainable energy that has been studied and applied in many countries is solar energy in photovoltaic and photocatalytic forms. Highlighting inorganic semiconductor materials, such as germanium, silicon, oxides, binary compounds and alloys. Some of these solution-processed inorganic photovoltaic materials have stood out due to their reduced manufacturing price compared to conventional production of photovoltaic materials, such as perovskites [1]. However, these materials generally use heavy metals such as lead. An alternative that is being studied to solve this problem are ternary compounds, materials free of heavy metals. Among them, bismuth silver sulfide nanoparticles are being studied. These nanoparticles have a high absorption range, high mobility and high absorption coefficient [2]. The present work aimed to develop and study the ternary compound AgBiS₂, as a light-absorbing layer, obtained through solvothermal synthesis, aiming to study the influence of the annealing temperature when the AgBiS₂ powder is subjected to temperatures of 100, 200 and 300 °C [3]. The thin films of this material were obtained by spin-coating deposition, being characterized by XDR, FTIR, UV-Vis, XPS and SEM. The solar cells will be manufactured to evaluate the quality of the materials and verify the potential use of the developed materials.<br/>Acknowledgements:<br/>BYD for financial support<br/>References:<br/>[1] JU, M. et al. Nanoscale advances, 2-2, 770–776, 2020.<br/>[2] Akhil, S., & Balakrishna, R. G. J. Mater. Chem. A, 10, 8615–8625, 2022.<br/>[3] S. SUGARTHI et al. Materials Science in Semiconductor Processing, 107, 104781–104781, 2020.