(Invited) Progress in Materials and Process for Commercially Viable Perovskite Solar Cells

All-solid-state perovskite solar cells (PSCs) based on organometal trihalide absorbers have achieved remarkable power conversion efficiencies (PCE) exceeding 26%, with projections suggesting potential improvements up to 27%. As research advances toward the commercialization of PSCs, critical challenges such as long-term stability, scalable fabrication methods, and the mitigation of lead-related environmental hazards remain to be addressed. Furthermore, flexible perovskite solar cells, leveraging plastic substrates, present exciting opportunities for niche applications, including portable chargers, electronic textiles, and industrial roofing. This presentation highlights our recent progress in developing sustainable perovskite solar cells with minimized environmental impact. Specifically, we introduce an eco-friendly, solvent-based green fabrication process designed to produce highly efficient and sustainable PSCs. Additionally, we explore advancements in flexible perovskite solar modules, focusing on enhanced efficiency through controlled reverse bias voltage management.