This document summarizes key concepts about semiconductors. It discusses intrinsic and extrinsic semiconductors, energy levels, characteristics like bipolar charge carriers and temperature dependence. It also describes diodes, doping, forward and reverse bias, I-V characteristics, rectifiers, and transistors. It notes that semiconductors are the foundation of modern electronics, from early vacuum tubes to today's 14nm transistors, and are used widely in applications. The document was presented by six students to their professor.

1. Semiconductor
Device
Presented To
Prof. Dr. Quazi Deen Mohd. Khusru
Department of Electrical and Electronics
Engineering

2. Presented By-
Mursalin Khan Prio
Nazrul Islam Azad
Junayed Hossain
Abdullal- Al- Mayin
Mohammad Shihab
Suraia Islam Zerin
152-33-2686
152-33-2681
152-33-2707
152-33-2629
151-33-2334
151-33-2324

3. Content
Semiconductor
Characteristics
Diode
Doping
I-V Characteristics
Rectifier
Transistor
Uses of Semiconductors

4. Semiconductor Device
An electronic components that
exploit the electronic properties
of semiconductor materials.

5. Types of Semiconductor
 Two types of Semiconductor –
Intrinsic Semiconductor
Extrinsic Semiconductor

6. Energy Level
Energy Gap is very less in order to
conduct the electrons.

7. Characteristics
Bipolar Charge Carrier.
Conditionally Conductor.
Temperature dependence on Carrier
Concentration and Mobility.

8. Diode
Diode is a Device with two electrode.
A p-n junction diode is a two terminal
device made up of Semiconductor
Device.

9. Doping
In n-type Silicon,
Intrinsic Semiconductor doped with
As/P/Sb
 Donor : As/P/Sb

10. Doping
In p-type Silicon,
Intrinsic Semiconductor doped with
Al/B/Ga
Acceptor : Al/B/Ga

11. Forward Bias
Resistance is very small.
Hole from p-type material and
electron from n-type able to cross over
the junction.

12. Reverse Bias
Resistance is very high.
 Reverse polarity causes a very
small current to flows as both
electrons and holes are pulled away
From the junction.

13. I-V Characteristic :

14. Rectifier
Converts Alternating Currents to
Direct Currents.

15. Types of Rectifier
Two types of Rectifier-
Half-Wave Rectifier
Full-Wave Rectifier

16. Transistor
A semiconductor device used to
amplify or switch electronic signal.

17. Transistor
Consist of two p-n junction back to back.
Has three region
-Emitter
-Base
-Collector

18. Semiconductor

19. Semiconductor is the foundation of
modern day electronics.

20. Vacuum tube

21. IMB 701

22. 14 nm transistors

23. Application

24. Semiconductor is the foundation of
modern day electronics

25. THANK YOU