"Semiconductor devices such as diodes, transistors and integrated circuits are found everywhere in our daily lives, in televisions, automobiles, washing machines and computers. We have come to rely on them in every aspect and we are expecting higher performance at lower cost. Personal computers are the corner stone on this subject. The complexity and performance of the today’s personal computers vastly exceeds that of their old computer and that for about an equivalent purchase price.The essential fact which has driven the successful growth of this technological industry is that through industrial skill and technological advances. These devices deliver year after year better performance while consuming less power and because of their smaller size they can also be manufactured at a lower cost per device.Technology of the twenty-first century is relying heavily on the development of new materials and their structures in which the technology of semiconductors is the foundation of modern electronics, including transistors, solar cells, light-emitting diodes, quantum dots, and digital and analog integrated circuits A new era has just begun, where people’s life changes dramatically with every step the technology takes and the science is being developed faster with each advance. A mutual relation that only goes towards benefits in an endless cycle of growing. This book takes some interesting aspects and advances of devices that relies on semiconductor physics, guiding the reader deeper into both the physical basis and their applications."