Question

Derive expression for density of electron in conduction band in intrinsic

Answer 1

Answer:

The conduction band is generating a number of electrons and a valance band is generation a number of holes , when these two numbers are equal we can say it an intrinsic model.

we can write this like,

N(intrinsic) = N= P

here N = electron-carrier concentration, P = hole-carrier concentration

N(intrinsic) = intrinsic carrier concentration

The electron concentration in the conduction band is given as

N = Nce^-(EC-EF)/KBT

here KB is the Boltzmann constant

T is the absolute temperature of intrinsic semiconductor

Nc is the effective density of states in conduction band.

 

Answer 2

Answer:

macroscopic theory drawbacks