Semiconductor Electronics

p-n junctions, diodes, transistors and logic gates.

1.Introduction to Semiconductors
A simple introduction to what semiconductors are, why they are important, and where we see them in daily life.
2.Energy Bands in Solids
Understand energy bands, valence band, conduction band and band gap in a simple and beginner-friendly way.
3.Types of Semiconductors
Learn the difference between intrinsic and extrinsic semiconductors with easy examples.
4.Doping of Semiconductors
A simple explanation of how adding impurities improves conductivity in semiconductors.
5.n-type Semiconductor
Learn how n-type semiconductors are formed and why electrons are the majority charge carriers.
6.p-type Semiconductor
Understand how p-type semiconductors are created and why holes act as majority carriers.
7.p-n Junction
A beginner-friendly explanation of how a p-n junction is formed and what happens at the junction.
8.Forward and Reverse Biasing of p-n Junction
Learn how connecting a battery changes the behaviour of a p-n junction in forward and reverse bias.
9.Zener Diode
Simple explanation of how a Zener diode works and why it is used as a voltage regulator.
10.LED (Light Emitting Diode)
Learn how LEDs produce light and why they are efficient and widely used.
11.Photodiode
A beginner-friendly explanation of how a photodiode detects light and converts it into electrical signals.
12.Transistors (BJT)
Understand bipolar junction transistors, their structure and how they work as switches and amplifiers.
13.Transistor as a Switch
Learn how transistors control current and act as electronic switches in circuits.
14.Logic Gates
Introduction to basic logic gates like AND, OR, NOT and how they form the building blocks of digital circuits.
15.Truth Tables
Understand how truth tables represent the output of logic gates for different input conditions.
16.Digital vs Analog Signals
Clear explanation of the difference between digital and analog signals with simple examples.
17.Applications of Semiconductors
Everyday uses of semiconductor devices like diodes, transistors, LEDs and ICs.