The lectures of this international school were designed to present overviewsof the basic concepts, current research and research developments of semiconductor quantum devices not only to young scientists, but also to graduate and postgraduate students. This book provides the basic fundamentals helpful for the future work of young researchers: thebasic principles of the different growth methods and of the structural, electrical and optical properties of semiconductor heterostructures. Thebook covers a wide range of the scientific research in the field of semiconductor quantum devices and focuses on links between physics and technology. Particular relevance is given to the technology, fabrication andphysics of electronic and opto-electronic devices.