Undergraduate course on semiconductor device physicsI

Energy band theory of semiconductors-Transport phenomenon in electronic devices- junction diode & optoelectronic devices
Undergraduate course on semiconductor device physicsI
File Size :
25.95 GB
Total length :
17h 59m


Examekalavya Technical


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Undergraduate course on semiconductor device physicsI

What you’ll learn

Fundamentals of semiconductor device physics

Undergraduate course on semiconductor device physicsI




This is an undergraduate course on semiconductor device physics. This course is the first part in a series of two courses on semiconductor device physics.For any electronics student understanding transport phenomena of charge carriers, drift current, diffusion current, energy band theory of semiconductors, electron hole pairs(EHPs), Junction formation in a diode, extending the device physics to three terminal devices like BJT and MOSFET is necessary.  This course begins with a briefing on the fundamentals that are required to understand semiconductor device physics including some quantum physics fundamentals. Energy band theory of semiconductors is explained with fermi Dirac distribution function. Intrinsic, extrinsic semiconductors are explained from the purview of energy band theory. Transport phenomenon talks about mobility, conductivity, Diffusion coefficient and the most important “Einstein’s relation” along with continuity equation. These topics are treated quantitatively along with the necessary qualitative analysis.Based on this knowledge, pn junction diode theory is well explained. It covers contact potential, Maximum field intensity, charge density profile along with the necessary energy band structures in forward bias and reverse bias conditions.  The second part of junction diode theory focuses on the quantitative analysis of diode currents, diode capacitive behaviour and diode switching times.Zener diode, opto electronic devices like photo diode, LED and solar cell are extensively covered.The main objective of this course is quantitative and qualitative analysis of semiconductors. By the end of this course you will acquaint the theory of electronic devices. About Author:Mr. Udaya Bhaskar is an undergraduate university level faculty and GATE teaching faculty with more than 15 years of teaching experience. His areas of interest are semiconductors, electronic devices, signal processing, digital design and other fundamental subjects of electronics.  He trained thousands of students for GATE and ESE examinations.


Section 1: Introduction

Lecture 1 Lesson-01: Introduction

Lecture 2 Lesson-02: Field intensity and potential

Lecture 3 Lesson-03: Electron Volt

Lecture 4 Lesson-04: Field Vs Potential

Lecture 5 Lesson-05: Current Density

Lecture 6 Lesson-06: Drift current

Lecture 7 Lesson-07: Diffusion current

Lecture 8 Lesson-08: Metals, Semiconductors and Insulators

Lecture 9 Lesson-09: Intrisic semiconductor

Lecture 10 Lesson-10: Summary

Lecture 11 Lesson-11: A small note on energies

Lecture 12 Lesson-12: Charge carriers in a semiconductor in unit volume

Lecture 13 Lesson-13: n-type semiconductor

Lecture 14 Lesson-14: p-type semiconductor

Lecture 15 Lesson-15: Atomic models

Lecture 16 Lesson-16: Bhor atomic model

Lecture 17 Lesson-17: Probability density function(PDF)

Lecture 18 Lesson-18: Schrodinger’s Wave equation

Lecture 19 Lesson-19: Quantum numbers

Lecture 20 Lesson-20: Electron distribution in Silicon

Lecture 21 Lesson-21: Energy levels in Silicon atom

Section 2: Energy Band Theory

Lecture 22 Lesson-01 Introduction

Lecture 23 Lesson-02 Energy band formation in Silicon

Lecture 24 Lesson-03 Energy bands

Lecture 25 Lesson-04 Energy bands explained with covalent bond structure

Lecture 26 Lesson-05 Metals, Insulators and semiconductors

Lecture 27 Lesson-06 Energy bands in Intrinsic semiconductor

Lecture 28 Lesson-07 Energy bands in Extrinsic semiconductor

Lecture 29 Lesson-08 E vs K diagram

Lecture 30 Lesson-09 Effective Mass

Lecture 31 Lesson-10 Effective mass of an electron in conduction band

Lecture 32 Lesson-11 Effective mass of a hole in valence band

Lecture 33 Lesson-12 Direct and Indirect band gap semiconductors

Lecture 34 Lesson-13 Density of states

Lecture 35 Lesson-14 Density of states-Derivation(Optional)

Lecture 36 Lesson-15 density of states graphical representation

Lecture 37 Lesson-16 Fermi Dirac distribution function-Introduction

Lecture 38 Lesson-17 Fermi Dirac function at 0K temperature

Lecture 39 Lesson-18 Fermi Dirac function at various temperatures

Lecture 40 Lesson-19 Maxwell-Boltzmann approximation

Lecture 41 Lesson-20 Equilibrium carrier concentrations

Lecture 42 Lesson-21 Free electron concentration in conduction band-Derivation

Lecture 43 Lesson-22 Electrons in Conduction band and Holes in Valence band

Lecture 44 Lesson-23 Intrinsic carrier concentration-Observations and expressions

Lecture 45 Lesson-24 Intrinsic Fermi energy level

Lecture 46 Lesson-25 Law of mass action

Lecture 47 Lesson-26 n-type semiconductor carrier concentration

Lecture 48 Lesson-27 n-type semiconductor Fermi energy level

Lecture 49 Lesson-28 p-type semiconductor-carrier concentration

Lecture 50 Lesson-29 Freeze out and complete ionisation

Lecture 51 Lesson-30 Partial Ionisation

Lecture 52 Lesson-31 Compensated semiconductor

Lecture 53 Lesson-32 Compensated semiconductor-Mathematical analysis

Lecture 54 Lesson-33 Complete Summary of the chapter

Lecture 55 Lesson-34 Constant Values

Section 3: Transport Phenomenon of semiconductors

Lecture 56 Lesson-01 Introduction

Lecture 57 Lesson-02 Mobility

Lecture 58 Lesson-03 Mobility- Mathematical expressions

Lecture 59 Lesson-04 Mobility as a function of field intensity

Lecture 60 Lesson-05 Mobility vs Temperature

Lecture 61 Solved example-01

Lecture 62 Lesson-06: Drift current density

Lecture 63 Lesson-07 Drift current density and conductivity

Lecture 64 Solved example-02

Lecture 65 Solved example-03

Lecture 66 Solved example-04

Lecture 67 Solved example-05

Lecture 68 Solved example-06

Lecture 69 Solved example-07

Lecture 70 Lesson-08 Resistivity

Lecture 71 Solved example-08

Lecture 72 Solved example-09

Lecture 73 Lesson-09 Diffusion current density

Lecture 74 Lesson-10 Diffusion current density derivation

Lecture 75 Lesson-11 Total current density

Lecture 76 Solved example-10

Lecture 77 Solved example-11

Lecture 78 Lesson-12 Built-in potential

Lecture 79 Lesson-13 Einstein relation

Lecture 80 Lesson-14 Volt equivalent of temperature

Lecture 81 solved example-12

Lecture 82 Solved example-13

Lecture 83 Lesson-15 Continuity equation-I(derivation)

Lecture 84 Lesson-16 Continuity equation-II(Steady state condition)

Section 4: pn Junction diode

Lecture 85 Lesson-01 Introduction

Lecture 86 Lesson-02 pn junction formation

Lecture 87 Lesson-03 open circuit condition in a junction diode

Lecture 88 Lesson-04 Forward bias condition

Lecture 89 Lesson-05 Reverse bias condition

Lecture 90 Lesson-06 Energy band diagram in open circuit condition

Lecture 91 Lesson-07 Contact potential derivation

Lecture 92 Lesson-08 Charge density

Lecture 93 Lesson-09 Field intensity

Lecture 94 Lesson-10 Maximum field intensity-derivation

Lecture 95 Lesson-11 Junction width vs Contact potential

Lecture 96 Lesson-12 Doping concentration vs Junction penetration

Lecture 97 Lesson-13 Energy band structure in Forward bias(FB)

Lecture 98 Lesson-14 Energy band structure in Reverse bias(RB)

Lecture 99 Lesson-15 Junction width in FB & RB conditions

Lecture 100 Solved example-01

Lecture 101 Solved example-02

Lecture 102 Solved example-03

Lecture 103 Solved example-04

Lecture 104 Solved example-05

Lecture 105 Lesson-16 Current components in diode

Lecture 106 Lesson-17 Diode current equation-I(derivation)

Lecture 107 Lesson-18 Diode current equation-II(Law of junction)

Lecture 108 Lesson-19 Current equation-Conclusion

Lecture 109 Lesson-20 Diode V-I characteristic curve

Lecture 110 Solved example-06

Lecture 111 Solved example-07

Lecture 112 Solved example-08

Lecture 113 Solved example-09

Lecture 114 Solved example -10

Lecture 115 Lesson-21 Temperature dependency

Lecture 116 Solved example -11

Lecture 117 solved example-12

Lecture 118 Lesson-22 Diode resistance

Lecture 119 Lesson-23 Diode capacitance

Lecture 120 Lesson-24 Transition capacitance-Derivation

Lecture 121 Lesson-25 Varactor diode

Lecture 122 Solved example-13

Lecture 123 Solved example-14

Lecture 124 Lecture-26 Diffusion capacitance derivation

Lecture 125 Lecture-27 Diode switching times part-01

Lecture 126 Lecture-28 Diode switching times part-02

Lecture 127 Solved example-15

Section 5: Zener diode and Opto- electronic devices

Lecture 128 Lecture-01 Introduction

Lecture 129 Lecture-02 Basics of Zener diode

Lecture 130 Lecture-03 Zener breakdown mechanism

Lecture 131 Lecture-04 Avalanche multiplication mechanism

Lecture 132 Lecture-05 Critical field in breakdown diodes

Lecture 133 Lecture-06 Zener diode as voltage regulator

Lecture 134 Solved example-01

Lecture 135 Lecture-07 Photo electric effect

Lecture 136 Lecture-08 Optical absorption

Lecture 137 Lecture-09 Absorption coefficient

Lecture 138 Lecture-10 Solved example-02

Lecture 139 Lecture-11 Optical absorption and wave length

Lecture 140 Lecture-12 Luminescence

Lecture 141 Lecture-13 Excess carrier

Lecture 142 Lecture-14 Low level injection

Lecture 143 Lecture-15 Excess carriers Mathematical analysis

Lecture 144 Lecture-16 Quasi fermi level

Lecture 145 Lecture-17 solved example-03

Lecture 146 Lecture-18 Photo detector introduction

Lecture 147 Lecture-19 Photo conductivity

Lecture 148 Lecture-20 Quantum efficiency

Lecture 149 Lecture-21 Solved example-04

Lecture 150 Lecture-22 Photo diode operation

Lecture 151 Lecture-23 Photo diode mathematical analysis

Lecture 152 Lecture-24 Assumptions

Lecture 153 Lecture-25 Quantum efficiency of photodiode

Lecture 154 Lecture-26 Responsivity

Lecture 155 Lecture-27 Response speed

Lecture 156 Lecture-28 P-I-N Photo diode

Lecture 157 Solved example-05

Lecture 158 Lecture-29 Solar cell introduction

Lecture 159 Lecture-30 Characteristic curve

Lecture 160 Lecture-31 solar cell-Mathematical analysis(Part-I)

Lecture 161 Lecture-32 Solar cell-Mathematical analysis(Part-II)

Lecture 162 Lecture-33 Efficiency and fill factor

Lecture 163 Solved example-06

Lecture 164 Solved example-07

Lecture 165 Solved example-08

Lecture 166 Solved example-09

Lecture 167 Lecture-34 Light emitting diode(Basics)

Lecture 168 Lecture-35 LED applications

Lecture 169 Lecture-36 Visible LED

Lecture 170 Lecture-37 Heterojunction structure

Lecture 171 Lecture-38 LED quantum efficiency

Lecture 172 Solved example-10

Lecture 173 Solved example-11

Lecture 174 Solved example-12

Undergraduates engineering students with electrical, Electronics as specialisation

Course Information:

Udemy | English | 17h 59m | 25.95 GB
Created by: Examekalavya Technical

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