Principles of electronic materials and devices represents a first course in electronic materials and devices for undergraduate students. This book is one of the few books on the market that have a broad coverage of electronic materials that today’s scientists and engineers need. The General treatment of the textbook and various proofs leverages at a semi Quantitative level without going into detailed Physics. The fourth edition is an extensively revised and extended version of its previous edition based on the developments in electronic and optoelectronic materials over the last ten years. This revised edition has many new and expanded topics, new worked examples, new illustrations, and new homework problems.