Silicon is an example of a semiconductor - Leaving Cert Physics - Question 1 - 2021

A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator. This means that semiconductors can conduct electricity, but not as efficiently as conductors like metals, and not as poorly as insulators like rubber.

Semiconductors have specific properties that make them essential in modern electronics. For example, their conductivity can be altered by impurities (a process known as doping) or by changes in temperature. Common semiconductors, like silicon, are used extensively in the manufacture of electronic components such as transistors, diodes, and integrated circuits.

In summary, the key characteristics of semiconductors are:

• Intermediate Conductivity: They conduct electricity better than insulators but worse than conductors.
• Doping Ability: Their conductivity can be modified by adding specific impurities.
• Temperature Sensitivity: Their conductive properties change with temperature.