Textbook in PDF format The field of perovskite solar cells (PSCs) has witnessed unprecedented progress over the past decade, transforming from a scientific curiosity to a leading contender in next-generation photovoltaics. With record efficiencies now surpassing 26% in lab- scale devices and rapid advancements in stability and scalability, perovskite technology is poised to revolutionize solar energy harvesting. This book provides a comprehensive exploration of the science, engineering, and commercialization pathways of this groundbreaking technology. Each chapter systematically covers key aspects from material synthesis and device physics to advanced fabrication techniques and emerging applications. Whether you are a researcher, engineer, or industry professional, this book is an authoritative reference and a for ward-looking guide to the challenges and opportunities in perovskite photovoltaics. Perovskite solar cells (PSCs) represent a groundbreaking advancement in renewable energy, offering a pathway to high-efficiency, sustainable energy solutions. This work provides a comprehensive exploration of perovskite materials, innovative device architectures, and advanced modeling techniques. Preface History and development of perovskite solar cells Synthesis and characterization of perovskite Interface engineering and charge transport layers Fabrication techniques for perovskite solar cells Advanced materials for high-efficiency perovskite solar cells Simulation tools for perovskite solar cell design and optimization Tandem solar cells: design and performance enhancement Hybrid systems incorporating perovskite solar cells Challenges and future directions for perovskite-based tandem systems Perovskite photovoltaic panels in buildings Wearable and flexible perovskite solar cells Importance of perovskite solar cells in sustainable energy solutions