VIII.2. A Semiconductor Device Primer

Since the equilibrium concentrations
the components of the diffusion current due to holes and electrons
are
The total current is the sum of the electron and hole components
where
J
J
n
p
J
n
p0
e
e
2
i
n
=
N
= q D
n
= q D
J
=
0
J
n
p
+ J
= q n
e
A
2
i
n
N L
A
D
2
i
n
n
N L
2
i
p
=
and
p
J
Introduction to Radiation Detectors and Electronics Copyright © 1998 by Helmuth Spieler
VIII.2.a. A Semiconductor Device Primer, Doping and Diodes
p
n0
2
i
n
=
N
qeV
/ kBT
( e −1)
qeV
/ kBT
( e −1)
0
⎛
⎜
Dn
⎜
⎝ N AL
( e
n
q V / k T
+
e
N
B
D
D
p
L
−1)
p
⎞
⎟
⎠
D