The intention of this book is to provide an impression of all aspects of p- tovoltaics (PV). It is not just about physics and technology or systems, but it looks beyond that at the entire environment in which PV is embedded. The ?rst chapter is intended as an introduction to the subject. It can also be considered an executive summary. Chapters 2-4 describe very brie?y the basic physics and technology of the solar cell. The silicon cell is the vehicle for this description because it is the best understood solar cell and also has the greatest practical importance. A reader who is not interested...