Remember that
the motion of hole is only a convenient way of
describing the actual motion of bound electrons,
whenever there is an empty bond anywhere in
the crystal Under the action of an electric field,
these holes move towards negative potential
giving the hole current, Ih The total current, I is
thus the sum of the electron current Ie and the
hole current Ih:
I = Ie + Ih
(14 2)
It may be noted that apart from the process of generation of conduction
electrons and holes, a simultaneous process of recombination occurs in
which the electrons recombine with the holes