<P> <B> </B> The first true <I>introduction</I> to semiconductor optoelectronic devices, this book provides an accessible, well-organized overview of optoelectric devices that emphasizes basic principles. <B> </B> Coverage begins with an optional review of key concepts—such as properties of compound semiconductor, quantum mechanics, semiconductor statistics, carrier transport properties, optical processes, and junction theory—then progress gradually through more advanced topics. The <I>Second Edition</I> has been both updated and expanded to include the recent developments in the field. </P>