Last time we have discussed the conductivity of semiconductor. Let us today derive the expression the expression for conductivity of semiconductor.

In a Semi-Conductor of length (ℓ) and area of Cross-Section. Let n_{e} and n_{h} be the no. of electrons and holes with drift velocities V_{e} and V_{h} respectively.

So, the total current in the semi-conductor will be the sum of current due to electrons as well as holes,

i.e. I = I_{e }+ I_{h }(i) Continue reading “Derivation of expression for the conductivity of a Semi-Conductor”