In the last 50 years, solid state devices served as the foundation of the digital revolution which has affected all aspects of our modern life. Although fabrication of these devices is a complex process that requires close collaboration of specialists from different disciplines, the working principles of most of these devices can be learnt at the junior undergraduate level. The first part of this introductory course is to understand how material properties are affected under equilibrium and non-equilibrium using elementary concepts of solid state physics . In next part, we will use this framework to analyze diodes and bipolar junction transistors . And in the last part, we will do the same for MOSFETs and other representative devices as time permits . Course objectives: 1.Understand and explain how basic material properties affect the operation of semiconductor devices. 2.Understand how simple models can be developed and used to explain the impact of device on circuit behavior. 3.Develop the basic tools with which novel devices can be studied.
Solid state devices ? History and its relevance in modern world Solids, Crystals and Electronic grade materials Formation of energy bands in solids Concept of hole, Density of states and Fermi level Intrinsic and extrinsic semiconductors Equilibrium Carrier concentration Direct and indirect semiconductors Recombination and Generation of carriers, Carrier transport ? Drift and Diffusion Equations of state ? Continuity and Poisson equation pn junction ? energy band diagram, derivation of dc and ac characteristics Bipolar junction transistors ? physics and characteristics MOS capacitor MOSFET ? physics, characteristics and modeling Other devices: LEDs, Solar cells, metal-semiconductor junctions, solid state memories
1. Robert Pierret, "Advanced Semiconductor Fundamentals," Pearson, 2003
2. C.T. Sah, "Fundamentals of Solid State Electronics", World Scientific Publishing, 1991
3. Amitava DasGupta and Nandita DasGupta, "Semiconductor Devices: Modelling And Technology", Prentice Hall India, 2004
4 S. Karmalkar, "Solid state devices", NPTEL video lectures available on youtube; transcripts available at http://textofvideo.nptel.iitm.ac.in/video.php?courseId=11710609