conduction

1
Metal-Semiconductor Interface
conduction
Fermi Energy
n-type
valence
2
N-type Schottky depletion region
0
-

Neutral n-type
metal
x
3
Schottky Barrier
-
-


EG
Fermi Energy
metal
4
n-type
p-type
5
Fermi-level pinning
6
Schottky diode under bias rectification
FORWARD
REVERSE
7
Ohmic metal-semiconductor contacts
8
Doping and ohmic junctions
High doping results in narrow depletion width!
9
Doping and ohmic junctions
Low doping
high doping
10
heterojunctions
11
2DEG