1.
Topics:
Semiconductors (CHAPTER # 2 )
Book:Electronics Principles (8th
edition)
Basic Electronics
Lecture 3 & 4

2.
Today’s Topic
 Semiconductors
 Silicon Crystals
 Intrinsic Semiconductors
 Two Types of Flow
 Doping a Semiconductor
 Two Types of Extrinsic Semiconductors
 The Unbiased Diode
 Forward Bias
 Reverse Bias
 Breakdown
 Energy Levels
 Barrier Potential and Temperature
 Reverse-Biased Diode

3.
To understand how diodes, transistors, and integrated
circuits
work, you first have to study semiconductors:
materials that are
neither conductors nor insulators. Semiconductors
contain some
free electrons, but what makes them unusual is the
presence
of holes. In this chapter, you will learn about
semiconductors,
holes, and other related topics.

4.
Assignments #1
 Solve All MCQ (Self test 54)
 Solve all numerical (Chapter#2 All Examples in
Slids)