Chapter 2
P–N Junction Diode Characteristics
Learning Objectives
To get familiarity of structural details and fundamental concepts of
- Semiconductor materials and P–N junctions.
- The structural details and the working principles of Semiconductor Diode and its applications.
2.1 REVIEW OF SEMICONDUCTOR PHYSICS
- The electronics subject begins from the concepts of behaviour of charge carriers in electron devices and Integrated Circuits (ICs) under influence of electric fields.
- A model of an atom is shown in Fig. 2.1. The aspect of electron motion is analogous to the planetary motion in which the planets rotate round the sun. On similar lines, electrons move in closed stationary orbits around the positive nucleus in an atom.
Fig. 2.1
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