Types

Question 1

Intrinsic semiconductors

Answer 1

Pure semiconductors, meaning they do not contain any impurities. They have a small but finite number of free electrons and holes, which are created by thermal energy. The conductivity of intrinsic semiconductors increases with temperature.

Question 2

Extrinsic semiconductors

Answer 2

Doped semiconductors, meaning they contain impurities that have been added to the semiconductor material. The impurities can be either donors or acceptors. Donors are atoms that have more valence electrons than the semiconductor material, and they donate these electrons to the semiconductor material. Acceptors are atoms that have fewer valence electrons than the semiconductor material, and they accept electrons from the semiconductor material. The addition of impurities to a semiconductor material can significantly increase its conductivity.

Question 3

Compound semiconductors

Answer 3

These are semiconductors that are made up of two or more elements. Some examples of compound semiconductors include gallium arsenide (GaAs), indium phosphide (InP), and silicon carbide (Si

Question 4

Organic semiconductors

Answer 4

These are semiconductors that are made up of organic molecules. Organic semiconductors have attracted interest for their potential applications in flexible electronics and optoelectronics.

Question 5

Quantum dots

Answer 5

These are semiconductor particles that are only a few nanometers in size. Quantum dots have unique optical and electronic properties that make them promising for applications in lasers, light-emitting diodes (LEDs), and solar cells.