Basic Semiconductor Physics

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Get online certificate after completing this course successfully. Check sample certificate on this link.

Some substances like Germanium, Silicon, Carbon, etc. are neither good conductors like copper nor insulators like glass. The resistivity of these materials lies in between conductors and insulators. Such substances are known as semiconductors.

Semiconductor devices are very important parts in electronics. There are different types of semiconductor devices like diode, LED (Light Emitting Diode), bi-polar transistor, Integrated Circuit (IC), MOSFET (Metal Oxide Semiconductor Field Effect Transistor), FET, JFET (Junction Field Effect Transistor), SCR (Silicon Controlled Rectifier), etc. They are used in all types of systems for quality control and automation. Semiconductors are very fast in working, have low electrical consumption and long life.

Understanding Semiconductors

1
CONDUCTOR, INSULATOR & SEMICONDUCTOR
20 Minutes

The atomic structure and energy gap between valence band and conduction band plays important role in deciding the conductivity of the material. Thus conductivity depends on number of free electrons, to carry electric current.

2
INTRINSIC SEMICONDUCTOR
30 Minutes

The pure crystal of semiconductor (Si or Ge) is known as intrinsic semiconductor at room temperature. The Silicon atom has 14 electrons revolving around its nucleus. In first orbit - 2 electrons, in second orbit -8 electrons i.e. 4 electrons in last orbit, known as valence electrons.

3
EXTRINSIC SEMICONDUCTOR
01 Hour

The devices like diodes, transistors, ICs used in electronic circuits are manufactured with the help of extrinsic semiconductor. When a trivalent or pentavalent element is mixed with pure Silicon crystal (i.e. intrinsic semiconductor), the new material is formed known as extrinsic semiconductor. The process of adding this element into pure Silicon is called doping. So a doped Si is called extrinsic semiconductor. They are of two types, P-type semiconductor and N-type semiconductor.

4
Comparison of P-type and N-type semiconductor
10 Minutes

Following is the comparison of two types of semiconductors. Learn them and remember the points for understanding the behaviour of semiconductors.

5
How PN junction is formed?
30 Minutes

A PN junction diode is the first semiconductor device in semiconductor family. It is also known as unidirectional current device, because it allows current only in one direction through it.

6
What is biasing of semiconductor?
01 Hour

Biasing means connecting a PN junction across the battery or a power supply, in forward or reverse direction.

7
How to find out the anode & cathode using a multimeter?
15 Minutes

Complete practical procedure for finding out anode and cathode and whether the diode is ok or not.

8
Energy Level Diagrams
01 Hour

In forward biasing of diode, free electrons from N-layer cross the junction and come into P-layer. Then they recombine with holes and then attracted by positive terminal of battery. In reverse biasing, free electrons in N-layer go away from the junction. So they produce more positive ions near the junction.

Applications of PN Junction Diode

1
Rectifier Circuits
02 Hours

Download the complete pdf file of applications of rectifier circuits with formulae, calculations and the related exercise. Also watch the working of rectifier circuits with the help of video lectures.

2
PN Junction: Solved Unsolved Problems
03 Hours

A diode is a semiconductor device that contains two semiconductor layers known as p-layer and n-layer. It has two terminals ANODE and CATHODE. Inside it there is one junction known as p-n junction. It also acts as potential barrier for the diode. Any diode conducts current only in one direction i.e. from ANODE to CATHODE. Hence it is called unidirectional device.

Get Course Certificate Now!

1
Final Online Test
30 Minutes

Great...! You have completed the course! Now click on this link to take the FINAL ONLINE TEST on this course. This link will work only when you have completed the course!

Yes. You will be able to construct your own Half wave, Full Wave and Bridge Rectifier circuits with the help of this course.
No. You must have passed at least 9th or 10th standard in order to take this course.

Specially designed for the students admitted in 11th standard electronics (C2), computer science (D9) or even general science students. This course is equally useful for B.Sc. and B.E. level students.

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Enrolled: 74 students
Duration: 2 Days
Lectures: 11
Video: 30 Minutes
Level: Beginner
Basic Semiconductor Physics
Category:
5 out of 5
5
1 review
Price:
Free