Electronics : Diode (Part 1) - A Solid State Approach
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6,541 students enrolled

Electronics : Diode (Part 1) - A Solid State Approach

Diode as a Solid State Device-know what is happening inside the diode-Very useful for 2nd year Electronics Engg students
4.0 (62 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
6,541 students enrolled
Created by Sumanta kumar Pal
Last updated 7/2019
English
Current price: $13.99 Original price: $19.99 Discount: 30% off
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This course includes
  • 3 hours on-demand video
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
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What you'll learn
  • Understand the fundamentals of P-N Junction Semiconductor diode by adopting a Solid State approach,Know what happens inside the diode under different conditions.
  • Analysis of Diode under Forward Bias,its Energy Band Diagram,Carrier Concentration variation w.r.t distance,Electric Field picture
  • 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.
  • Current Density as a function of distance under applied forward bias.
  • 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.
Requirements
  • Basic knowledge of science,High school mathematics
  • Fundamental ideas of current, voltage and electric field
  • Knowledge of Semiconductor Physics,Complete idea regarding Drift current,Diffusion current,Diffusion approximation and Injection level in Semiconductor
  • Knowledge of Semiconductor Continuity Equation,Fermi Level
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-

  • 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).

  • 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.

  • Current Density as a function of distance under applied forward bias.

  • 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.



Who this course is for:
  • The course is for those who love electronics and love to explore the world of electronics
Course content
Expand all 34 lectures 03:13:50
+ Introduction to the concept of Diode
5 lectures 33:07

Lets start from the basics.Learn the Basic electrical elements and then we will go to higher concepts.

Preview 03:55

How can we come to the concept of Diode from the basic concept of resistance....its simple.

Preview 06:07

Different diode resistor combination to analyse any electrical circuit with ease.

Different Diode & Resistor combination
05:47

Generate different piece-wise functions with the help of Diode,Resistors and voltage sources.

Diode Function Generator
09:52
+ Solid State Approach to analyze the Diode
3 lectures 23:21

Carrier distribution as a function of distance gives us the basics of all the concepts related to diodes under equilibrium.So it is very important.

Carrier concentration as a function of distance under equilibrium
12:26
Electric field & Potential picture under equilibrium
07:37
+ Quantitative analysis of a Diode under equilibrium
5 lectures 26:23
Value of Peak Electric field
04:29
Value of Depletion length
03:50

Examples always help to understand concepts better.

Explanation with an example
06:22
Some important facts
04:16
+ Energy Band Diagram of a P-N junction Diode under equilibrium
2 lectures 15:12

Quasi-Fermi level concept is important to draw the energy band diagram of a diode under equilibrium and under biased conditions. That is why clarity regarding this concept is essential.

Concept of Quasi-Fermi level
07:29
Energy Band Diagram plot
07:43
+ Ideal current voltage Characteristic under applied Forward Bias
14 lectures 01:16:47
Set of approximations
06:30
The Electric Field picture
05:38

This concept will finally lead us to the I-V Characteristic of a diode under forward bias. That is why is concepts is discussed in full detail in 3 lectures.

Carrier concentration as a function of distance ,Lecture 1
10:28
Carrier concentration as a function of distance ,Lecture 2
03:29
Carrier concentration as a function of distance ,Lecture 3
03:28

To draw the current density variation w.r.t distance,it requires the concept of Continuity Equation under steady state condition.Lets discuss it first.

Current Density as a function of distance ,Lecture 1
03:20
Current Density as a function of distance ,Lecture 2
04:06
Current Density as a function of distance ,Lecture 3
03:56
Current Density as a function of distance ,Lecture 4
03:13
Plot of I-V Characteristic for Si Diode at 300K
05:52

Different expressions of Diode current will ultimately help us to clear the concepts and solve several numerical problems.

Another Expression for Diode Current
08:19

Sometimes students confuse between these two voltages.Lets get the concept discussed again in detail.

Cut in voltage VS Built in voltage
02:30
Practical Diode current equation
04:10
Energy Band Diagram under Forward Bias
11:48
+ Ideal current voltage Characteristic under applied Reverse Bias
5 lectures 19:00
Introduction & Electric Field picture
02:24
Carrier Concentration variation w.r.t. distance
05:29
Reverse Saturation Current and Temperature
02:34
Breakdown phenomena : Avalanche Breakdown
03:41
Breakdown phenomena : Zener Breakdown
04:52
+ MCQs on Diode
0 lectures 00:00
Multiple choice questions on Diode to quickly recapitulate what we studied
12 questions