Current transport
Junction diode and M-S diode too more complex. minority + majority current flow also.
Now think of an  junction
or
Now think of an  junction Fig. 14.6
Effective electron mass of   
Where  and  |
Effective hole mass is
Where,  and  |
The Bandgap is given by
 for 
|
and
and
The dielectric constant is
The electron affinity is
 for 
|
and
The conduction band density of states is related to  by
Where  for  |
and
The valence band density of states is
where
|
