This is an introductory text on electron transport in semiconductor materials and is written for advanced undergraduates and graduate students. The book provides a thorough treatment of modern approaches to the transport properties of semiconductors and their calculation. It also introduces those aspects of solid-state physics that distinguish semiconductors from other materials and outlines the principles which are vitally important for understanding transport in them. Topics covered in the book include: the Boltzman equation; near-equilibrium transport, and non-equilibrium high-field...