GCSP research stipend | Fall 2025

Nontoxic CsSnBr3 Perovskite Photovoltaics with Scalable Processing and Crystallization Control

Next-generation perovskite solar materials often rely on toxic lead that can degrade into toxic byproducts, limiting their long-term use in solar windows, which need to last ~30 years. This research focuses on creating safer and more stable alternatives using tin-based perovskites enhanced with natural starch to control crystallization and a stabilizing agent to prevent material breakdown or oxidation. By adjusting the mixture and using scalable coating methods, the research aims to produce smooth, transparent films that maintain stability and performance over time. The outcome could lead to more durable, eco-friendly solar technologies for future energy-efficient buildings.