Semiconductor Material
Semiconductor Material: Overview
This topic talks about semiconductors. Types of semiconductors are intrinsic and extrinsic semiconductors. Further, n-type and p-type semiconductors are also explained in detail.
Important Questions on Semiconductor Material
In a pure semiconductor, electric current is due to_________.

In a p–type semiconductor, the concentration of holes is The intrinsic carrier concentration is . The concentration of electrons will be.

Assertion : An n-type semiconductor has a large number of electrons but still it is electrically neutral.
Reason : An n-type semiconductor is obtained by doping an intrinsic semiconductor with a pentavalent impurity.

How current is conducted in intrinsic semiconductor?

In an intrinsic semiconductor, the number of free electrons equals the number of holes.

The probability of electrons to be found in the conduction band of an intrinsic semiconductor at finite temperature is which of the following?

When the electrical conductivity of a semiconductor is due to the breaking of its covalent bonds, then the semiconductor is said to be

Which of the following is the best conductor of electricity?

The mobility of free electrons is greater than that of free holes because

Describe the conduction band and valence band in semiconductors.

The mobility of conduction electrons is greater than that of holes, since electrons

Define electron motion in a semiconductor.

What is the symbol of NOT gate?

The truth table of a logic gate is given as
Input | Output |
What is the gate?

The probability of electrons to be found in the conduction band of an intrinsic semi-conductor at a finite temperature

Explain the electric current due to electrons in an intrinsic semiconductor.

At absolute zero temperature, intrinsic Germanium and intrinsic Silicon are

Calculate the electric current generated in an intrinsic germanium plate at room temperature whose area is and width is and a potential difference of is applied across its faces. Intrinsic charge carrier density is for germanium at room temperature. The mobility of electrons and holes is and .

At absolute zero temperature intrinsic Germanium and intrinsic Silicon, are

At room temperature in intrinsic Silicon the number of charge carriers per unit volume is . If mobility of electrons is and mobility of holes is Then conductivity of silicon is is
