This book discusses the applications of perovskite materials in photovoltaics, offering a comprehensive investigation into various aspects of perovskite solar cells. It highlights the superior optoelectronic properties of organic-inorganic metal halide perovskite materials, such as high carrier diffusion length, larger absorption coefficient, and compatibility with solution-processable fabrication techniques, making them strong contenders for the future photovoltaic market. The topics covered in this book include synthesis methods, device configuration, electrode materials, scalability, stability issues, innovations in material engineering, 2D Materials, environmental concerns, tandem configurations, broader applications. The book concludes with a summary and future directions, integrating insights from all chapters to outline a pathway towards sustainable and high-efficiency solar technologies. This volume serves as an invaluable resource for undergraduate, postgraduate, and Ph.D. scholars, providing a deep understanding of perovskite materials and perovskite solar cells.