PV has traditionally been used for electric power in space. Solar panels on spacecraft are usually the sole source of power to run the sensors, active heating and cooling, and communications. Photovoltaics for Space: Key Issues, Missions and Alternative Technologies  provides an overview of the challenges to efficiently produce solar power in near-Earth space and beyond: the materials and device architectures that have been developed to surmount these environmental and mission-specific barriers. The book is organized in four sections consisting of detailed introductory and background content as well as a collection of in-depth space environment, materials processing, technology, and mission overviews by international experts. This book will detail how to design and optimize a space power system’s performance for power-to-weight ratio, effectiveness at end of operational life (EOL) compared to beginning of operational life (BOL), and specific mission objectives and goals. This book outlines the knowledge required for practitioners and advanced students interested in learning about the background, materials, devices, environmental challenges, missions, and future for photovoltaics for space exploration. Provides an update to state-of-the-art and emerging solar cell technologies - Features comprehensive coverage of solar cells for space exploration and materials/device technology options available - Explains the extreme conditions and mission challenges to overcome when using photovoltaics in space Focuses on the newest, modern technologies and challenges of space photovoltaics PV has traditionally been used for electric power in space. Solar panels on spacecraft are usually the sole source of power to run the sensors, active heating and cooling, and communications. Photovoltaics for Space provides an overview of the challenges to efficiently produce solar power in near-Earth space and beyond: the materials and device architectures that have been developed to surmount these environmental and mission-specific barriers. The book is organized in four sections consisting of detailed introductory and background content as well as a collection of in-depth space environment, materials processing, technology, and mission overviews by international experts. This book will detail how to design and optimize a space power system’s performance for power-to-weight ratio, effectiveness at end of operational life (EOL) compared to beginning of operational life (BOL), and specific mission objectives and goals. This book outlines the knowledge required for practitioners and advanced students interested in learning about the background, materials, devices, environmental challenges, missions, and future for photovoltaics for space exploration. Dr. Sheila Bailey was a senior scientist in the Photovoltaics and Electrochemical Systems Branch at NASA Glenn Research Center, where she has worked from 1985-2018. She received her Bachelor’s (Duke) and Master’s (UNC) degrees in Physics and her Ph.D. in Solid State Physics (Univ. of Manchester, UK). She taught at Baldwin Wallace University for 27 years and has been an associate faculty member of the International Space University. Dr. Bailey’s PV work has centered around advanced etching, epitaxial lift off and quantum dot (QD) solar cells. She is co-author of over 150 publications in various aspects of solar cell materials processing and applications for space exploration. She has also authored numerous chapters in books and co-edited several books on this topic. She serves on editorial boards of several PV journals as a space PV expert. Aloysius F. Hepp is Chief Technologist at Nanotech Innovations and an independent consultant based in Cleveland, Ohio. He earned a PhD in Inorganic Photochemistry in 1983 from MIT and retired in December 2016 from the Photovoltaic & Electrochemical Systems Branch of the NASA Glenn Research Center (Cleveland). He was a visiting fellow at Harvard University from 1992–3. He was awarded the NASA Exceptional Achievement medal in 1997. He has served as an adjunct faculty member at the University of Albany and Cleveland State University. Dr. Hepp has co-authored nearly 200 publications (including six patents) focused on processing of thin film and nanomaterials for I–III–VI solar cells, Li-ion batteries, integrated power devices and flight experiments, and precursors and spray pyrolysis deposition of sulfides and carbon nanotubes. He has co-edited twelve books on advanced materials processing, energy conversion and electronics, biomimicry, and aerospace technologies. He is Editor-in-Chief Emeritus of Materials Science in Semiconductor Processing ( MSSP ) and is currently the chair of the International Advisory Board of MSSP , as well as serving on the Editorial Advisory Boards of Mater. Sci. and Engin. B and Heliyon . He has recently been appointed as Series Editor for the Vacuum and Thin-Film Deposition Technologies series and the Aerospace Fundam