-
/ U, p-n (. 5.1).
!!
. 5.1 p-n
p-n , . , , , .
, C, p-n , D , .
= eoe S/D (5.1)
eo = 8,85.10-12/ - ;
e - ;
S - .
C = dQ/dU (5.2)
dQ ;
dU .
U = (fk + U) (5.3)
(. 5.1) p-n ( , S=1)
Q+ = qN(xo - x)
Q- = qN(x- xo) (5.4)
5.4 D 5.2, 5,3 V=fk, p-n
D = ((e eofk /q)(1/Na+1/N))0.5 (5.5)
, p-n
D = k1 /(fk + U)0.5 (5.6)
5.1 5.6
= eoe S/D = k2 /(fk + U)0.5 (5.7)
k1, k2
.
p-n .
p-n U, .. , .
C=dQ/dU (5.8)
Q - .
, p-n p n .
, n-
Q = qS∫Dp(x)dx = f(U) (5.9)
Dp(x) ( ) n-
|
|
, 5.8 5.9
C=dQ/du = k3 Jp t exp(U/f T) / f T (5.10)
k3 ~0.5-1
t - .
Jp
, (5.10), p-n , .
, .
!! .
. 5.2
.
= + C (5.11)
-n
p-n , p-n .