Drawn from the comprehensive and well-reviewed Silicon Heterostructure Handbook, this text highlights the most mature and, not surprisingly, the most researched, silicon-based heterostructure devices. These are divided into four sections: SiGe heterojunction bipolar transistors (HBTs), heterostructure FETs, other heterostructure devices, and optoelectronic components. Topics include device physics, broadband noise, performance limits, reliability, engineered substrates, and self-assembling nanostructures. Coverage of optoelectronic devices includes LEDS, near-infrared detectors, photonic transistors for integrated optoelectronics, and quantum cascade emitters.