Fundamentals of LED Technology provides a complete introduction to one of the most transformational inventions in modern engineering, Light Emitting Diodes, or LEDs. From basic scientific principles to contemporary applications, this book provides a clear, systematic path to understanding the science, materials, device architectures, and systems underpinning LED technology today. Starting from the basic physics of light emitted through semiconductor devices, the book guides the reader through important milestones in the history of LED technology. The book explains the origins of LED materials and modern epitaxy methods, photonic design methods, how to increase the performance of semiconductor-based optoelectronic devices, and the various important semiconductors such as GaN, InGaN, and AlGaAs. Written in a less formal, conversational style, Fundamentals of LED Technology is well-suited for undergraduate and graduate-level electrical engineers, scientists, and professional engineers in fields such as electronics, materials science, photonics, and optoelectronics. Engineers, scientists, and professional engineers will find this book a valuable reference and source of inspiration to connect ideas to practice.