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Diode as a Solid State Device-know what is happening inside the diode-Very useful for 2nd year Electronics Engg students

What you will learn

### Discussion on Breakdown phenomena-Avalanche Breakdown & Zener Breakdown.

Description

Learn the fundamentals of Diodes and take the first leap to the world of Electronics. This course is on Diode as a Solid State Device. In this course we will thoroughly learn what happens inside a Diode under various applied voltages. So lets have a highlight of the entire course quickly-

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• Understand the fundamentals of P-N Junction Semiconductor diode. In this lecture we will understand the Diode from Solid State approach, that is we will learn what actually happens inside the Diode under different circumstances.
• Properties of P-N Junction Semiconductor diode (Concept of Energy Band Diagram, Depletion Width, Electric Field at the junction etc). Examples have also been included to further clarify the concepts.
• Mathematical expressions for Electric potential, Depletion Layer under Equilibrium.
• Discussion on Quasi-Fermi level and Energy Band Diagram plot.
• Carrier concentration as a Function of distance under applied forward bias. Its mathematical expressions have also been derived.
• Current Density as a function of distance under applied forward bias. Its mathematical expressions have also been derived.
• A common misunderstanding- Cut in voltage VS Built in voltage.
• V-I Characteristics of Diode under different bias conditions.
• Understand Diode function Generator & Diode Transfer-function Generator.
• Diode properties under reverse biased condition.
• Discussion on Breakdown phenomena-Avalanche Breakdown & Zener Breakdown.
English
language

Content

### Introduction to the concept of Diode

Basic Electrical elements
Introduction to Diode & Characteristic comparison
Linear & Non-linear resistance analysis
Different Diode & Resistor combination
Diode Function Generator

### Solid State Approach to analyze the Diode

Set of approximations for equilibrium analysis
Carrier concentration as a function of distance under equilibrium
Electric field & Potential picture under equilibrium

### Quantitative analysis of a Diode under equilibrium

Value of Electric Potential
Value of Peak Electric field
Value of Depletion length
Explanation with an example
Some important facts

### Energy Band Diagram of a P-N junction Diode under equilibrium

Concept of Quasi-Fermi level
Energy Band Diagram plot

### Ideal current voltage Characteristic under applied Forward Bias

Set of approximations
The Electric Field picture
Carrier concentration as a function of distance ,Lecture 1
Carrier concentration as a function of distance ,Lecture 2
Carrier concentration as a function of distance ,Lecture 3
Current Density as a function of distance ,Lecture 1
Current Density as a function of distance ,Lecture 2
Current Density as a function of distance ,Lecture 3
Current Density as a function of distance ,Lecture 4
Plot of I-V Characteristic for Si Diode at 300K
Another Expression for Diode Current
Cut in voltage VS Built in voltage
Practical Diode current equation
Energy Band Diagram under Forward Bias

### Ideal current voltage Characteristic under applied Reverse Bias

Introduction & Electric Field picture
Carrier Concentration variation w.r.t. distance
Reverse Saturation Current and Temperature
Breakdown phenomena : Avalanche Breakdown
Breakdown phenomena : Zener Breakdown

### MCQs on Diode

Multiple choice questions on Diode to quickly recapitulate what we studied