Topics of the Presentation 1.Semiconductor 2.Intrinsic and Extrinsic semiconductor 3.Difference between Intrinsic and Extrinsic semiconductor 4.Superconductor 5.Application of Superconductor

1. Types of semiconductor
Presented by:-
Harsh(19l7-19BST110)
B.Voc(Solar Technology)
6th Sem

2. Content
❖Semiconductor
❖Intrinsic and Extrinsic semiconductor
❖Difference between Intrinsic and Extrinsic semiconductor
❖Superconductor
❖Application of Superconductor

3. Semiconductor
⮚ Semiconductors are the materials which have a conductivity between conductors (generally metals) and non-
conductors or insulators(such as ceramics). Semiconductors can be compounds such as gallium arsenide or pure
elements, such as germanium or silicon.
⮚ There are 2 Types of Semiconductor
✔ Intrinsic Semiconductor
✔ Extrinsic Semiconductor

4. Intrinsic Semiconductor
⮚ Intrinsic Semiconductor:- An intrinsic (pure) semiconductor, also called an undoped semiconductor or I-
type semiconductor, is a pure semiconductor without any significant dopant species present. The
number of charge carriers is therefore determined by the properties of the material itself instead of the
amount of impurities.
⮚ Extrinsic Semiconductor:- Extrinsic semiconductors are semiconductors that are doped with specific
impurities. The impurity modifies the electrical properties of the semiconductor and makes it more
suitable for electronic devices such as diodes and transistors.

5. Difference between Intrinsic and Extrinsic
semiconductor
Source :- https://electronicsdesk.com/wp-content/uploads/2019/02/crystal-lattice-of-n-type-extrinsic-semiconductor.jpg
Crystallisation Structure of Intrinsic Semiconductor Crystallisation Structure of n-Type Extrinsic Semiconductor

6. Difference between Intrinsic and Extrinsic semiconductor
Intrinsic Semiconductor
⮚ Semiconductor in Pure form is known as Intrinsic
Semiconductor.
⮚ Due to its pure form, intrinsic semiconductors possess
low conductivity.
⮚ Examples:- Pure Silicone, Pure Germanium.
⮚ At Room Temperature
No. of Electron=No. of Holes
Extrinsic Semiconductor
⮚ Semiconductor, Which isn’t in Their Pure form or
Impure form is known as Extrinsic Semiconductor.
⮚ extrinsic semiconductors exhibit comparatively
better conductivity than intrinsic semiconductor.
⮚ Examples:- n-Type Semiconductor and p-Type
Semiconductor.
⮚ In n-Type, No. of Electron>No. of Holes
In p-Type, No. of electron<No. of Holes

7. Superconductor
A material that shows zero electrical resistance and magnetic field to
penetrate through is known as a superconductor, which is because of
its superconductivity. So, superconductors can conduct electricity
without any loss. Usually, a material will achieve its superconductivity
at a very cold temperature.
Superconductor and superconducting materials
are metals, ceramics, organic materials, or heavily doped
semiconductors that conduct electricity without resistance.
Superconducting materials can transport electrons with no resistance,
and hence release no heat, sound, or other energy forms.
Source :- https://www.bing.com/th?id=OIP.jyec52dmLFfKc69FA75IDwAAAA&w=200&h=152&rs=1&qlt=80&o=6&pid=3.1

8. Application of Superconductor
⮚ Superconductors are widely used in magnetic resonance imaging(MRI) and nuclear magnetic resonance
imaging(NMRI).
⮚ They are also used as the high energy particle accelerator in laboratories and also in nuclear fusion
reactors.
⮚ Superconductors are also used in fast digital circuits, Cell phone base Stations, power railguns and coilguns
and also in particle detectors.
⮚ Superconducting electromagnets are widely used in maglev trains.

9. Thanking you