Manish Kumar obtained his M.Tech. degree in Ceramic Engineering from IIT (BHU), Varanasi, and his Ph.D. degree in Physics from the Institute of Science, Department of Physics, Banaras Hindu University, Varanasi, India. He has been serving as an Assistant Professor in the Department of Physics at ARSD College, University of Delhi, New Delhi, India, for more than 12 years. His research focuses on environmentally friendly multifunctional materials for energy and memory devices, materials for green energy solutions, multiferroics, magnetoelectrics, composites, perovskite materials for photovoltaic applications, supercapacitors, white light-emitting materials, solar simulation via different software, and DFT calculation. He has published more than 123 research papers in international journals of high repute, authored one book on white light-emitting materials, edited five books, contributed 27 international book chapters, and holds one Indian patent. He has delivered talks at numerous national and international conferences and is a member of various research committees at different universities. Additionally, he has completed two national research projects and received the best research award from his institute. He has supervised and is currently supervising several Ph.D., M.Tech./M.Sc., and B.Sc./B.Tech. students. Dr. Kumar serves or has served as an editor for several highly reputed journals.  Abhishek Raj received his Bachelor of Technology degree in Electrical and Electronics Engineering from Cochin University of Science and Technology, Kochi, and completed his M.Tech. and Ph.D. (M.Tech.-Ph.D. dual degrees) from the Academy of Scientific and Innovative Research (AcSIR) at CSIR-NEERI, Nagpur, India. He has published 27 international research papers and one book chapter in an international research book of high repute. He also received the Late Shri P.S. Dutt Memorial Award for “Best Young Researcher” for his significant contribution to R&D in Environmental Science & Engineering, presented during the 65th CSIR-NEERI Foundation Day celebration on April 8, 2023. His research focuses on the design and development of lead-free perovskite solar cells through experimental and computational approaches.

• Chapter 1: Introduction: An overview of perovskite solar cells.- Chapter 2: Perovskite materials and synthesis techniques.- Chapter 3: Device structure of perovskite solar cells.- Chapter 4: Perovskite solar cells without hole transport layer.- Chapter 5: Electrode materials for perovskite solar cells.- Chapter 6: Deposition methods of perovskite absorber.- Chapter 7: Stability of perovskite solar cell: A real challenge.- Chapter 8: Interfacial engineering in perovskite solar cells.- Chapter 9: Bandgap modification strategy in perovskite solar cells.- Chapter 10: Perovskite solar cells and 2D materials.- Chapter 11: Lead-free perovskite solar cells: A real need of the world.- Chapter 12: Semitransparent perovskite solar cells: Fundamentals, achievements, and challenges.- Chapter 13: Perovskite-perovskite tandem solar cells: Basics to latest updates with challenges.- Chapter 14: Perovskite-silicon tandem solar cells: Basics to latest updates with challenges.- Chapter 15: Perovskite solar cell for indoor applications.- Chapter 16: Scaling up perovskite photovoltaic from lab to commercial market: Progress and challenges.- Chapter 17: Perovskite solar cells beyond the earth.- Chapter 18: Evaluation of toxicity of lead in perovskite solar cell: Current status and future challenges.- Chapter 19: Life cycle assessment study of perovskite solar cells.- Chapter 20: Concluding remarks and future outlook of perovskite solar cells.