Elemental Semiconductor and Compound semiconductor : CSE , EE

 

Elemental semiconductor and Compound semiconductor

 

Elemental semiconductors

Elemental semiconductor is made of a single element. Silicon and germanium are elemental semiconductors.

Semiconductor element of fourth group, that is doped with pentavalent or trivalent impurities, in order to get n-type semiconductors, are called elemental semiconductors.

Compound semiconductors:

Semiconductors, which are formed by combining fifth and third group or sixth and second group are called compound semiconductors.

Compound semiconductors are produced from two or more elements. Examples : GaAs, GaP, InAs, GaN, InSb, SiC.  

 Difference between elemental and compound semiconductors

 

Elemental semiconductor	compound semiconductor
1. elemental  semiconductors are those semiconductors which are composed of single species of atoms.	1. compound semiconductors are those semiconductors that combine two or more elements
2. Elemental semiconductors are made from single element and belong to IV group and VI group elements.	2. compound semiconductors  usually combine Group III and V elements and Group II and VI elements.
3. Elemental semiconductors are used for low-frequency devices.	3. compound semiconductors are used for high-frequency devices and optical devices.
4. Elemental semiconductors are used for low performance device.	4. compound semiconductors are ultra-high performance with sensing and other capabilities.
5. Elemental Semiconductors are known as indirect band gap semiconductor	5.Compound Semiconductors are known as direct band gap semiconductor
6. elemental semiconductors itself act as a semiconductor by origin like silicon, germanium etc.	6. compound semiconductor are formed artificially by mixing two different types of elements
7. Elemental Semiconductors are used in diodes, transistor,rectifiers, solar cells etc.	7. Compound semiconductors are used in power amplifiers, smartphones, wireless devices, DVDs,Blu-rays, LEDs, solar batteries, solar cells and gyro stabilisers in satellites.
8. elemental semiconductor cannot be used to make visible LEDs	8. Compound semiconductors are used to make visible LEDs
9. example : silicon, Germanium, Se, Te etc.	9. example, GaAs, InP, InGaAlP, InGaN etc.

 

Difference between elemental and compound semiconductors

1. Elemental  semiconductors are those semiconductors which are composed of single               species of atoms. 

    Compound semiconductors are those semiconductors that combine two or more elements

2. Elemental semiconductors are made from single element and belong to IV group and VI        group elements.

     Compound semiconductors  usually combine Group III and V elements and Group II and      VI elements.

3. Elemental semiconductors are used for low-frequency devices.

    Compound semiconductors are used for high-frequency devices and optical devices.

4. Elemental semiconductors are used for low performance device.            

    Compound semiconductors are ultra-high performance with sensing and other                     capabilities.

5. Elemental Semiconductors are known as indirect band gap semiconductor          

    Compound Semiconductors are known as direct band gap semiconductor 

6. Elemental semiconductors itself act as a semiconductor by origin like silicon,                         germanium  etc.      

    Compound semiconductor are formed artificially by mixing two different types of                   elements

7. Elemental semiconductors are used in diodes, transistor, rectifiers, Solar cells etc.    

    Compound semiconductors are used in power amplifiers, smartphones, wireless devices,      DVDs,

   Blu-rays, LEDs, solar batteries, solar cells and gyro stabilisers in satellites.

8. elemental semiconductor cannot be used to make visible LEDs

    Compound semiconductors are used to make visible LEDs

9. Elemental semiconductors : example : silicon, Germanium, Se, Te etc.   

    Compound semiconductors: example : GaAs, InP, InGaAlP, InGaN etc.