Question

Derive an expression for the concentration of electrons in intrinsic semiconductors.

Answer 1

Expression for the concentration of electrons in intrinsic semiconductor :

• The intrinsic carrier concentration is defined as the number of electrons present in the conduction band or the number of holes present in the valence band in the intrinsic semiconductor.
• In semiconductors, thermal energy plays a vital role in the concentration of electrons and holes to be generated in intrinsic semiconductors.
• Electrons and holes are generated by thermal energy.
• The electrons and holes will remain constant if the temperature remains constant.
• $n_{i} = n =p$ , where '$n_{i}$' is the intrinsic concentration, 'n' is the concentration of electrons and 'p' is the concentration of holes.