Which of the following is a semiconductor?

By Mandeep Kumar|Updated : August 1st, 2022

1. Wood

2. Phosphorus

3. Silicon

4. Glass

The material whose electrical conductivity falls between a conductor and an insulator is called a semiconductor. The components such as diodes and transistors are made of semiconductors. It is essential equipment for many electronic appliances.

Answer: Silicon is a semiconductor.

The semiconductor devices possess various properties like passing current more easily in one direction than the other, showing variable resistance, and having sensitivity to light or heat. The electrical properties of a semiconductor can be modified by doping and by the application of electrical fields or light, devices made from semiconductors can be used for amplification, switching, and energy conversion.

Semiconductors have a filled valance band, empty conduction, and a small energy gap. Germanium (Ge) and Silicon (Se) are the commonly used semiconductors. It is because the energy required by these two materials to release electrons from their valance band is too small.

Properties of Semiconductor

Following are the properties of semiconductors:

  • They have variable electrical conductivity.

  • They have a negative temperature coefficient of resistance.

  • Its resistivity is more than the insulator and less than a conductor.

  • On doping, they behave like a conducting material and allow the current to pass through it.

Summary:

Which of the following is a semiconductor?

Out of the given options, silicon is the semiconductor.

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