Device physics is fundamental to semiconductor technology in a number of ways. It is necessary to understand the behavior of transistors, both from a qualitative standpoint as well as from a more-detailed modeling standpoint. Device physics provides the basis for technology development. The path from junctions to bipolar junction transistors to MOSFETs to compound semiconductors relies on an in-depth understanding of device physics. Device physics also serves as the basis for understanding chip design and layout issues, fab processing issues, reliability physics issues, and analysis and characterization issues. While most engineers study this field in college, it is always good to review this topic and understand new developments in this area. This workspace provides that review and understanding necessary for semiconductor devices and integrated circuits.