The 225-page volume Wide Bandgap Light Emitting Materials and Devices addresses research on the materials and concepts for the devices. Sections cover III-nitride LEDs on Si, SiC, sapphire and other substrates, providing information on heteroepitaxy, light extraction and optical characteristics. Chapters on III-nitride microcavity light emitters discuss microstructure fabrication, nitride microdisplays, submicron waveguides and optically pumped vertical-cavity surface-emitting laser structures. References and an index are provided. Gertrude F. Neumark, Igor L. Kuskovsky and Hongxing Jiang, eds.; Wiley-VCH Verlag GmbH & Co. KgaA, Weinheim, Germany, 2007; €119, $172.