IJ 4. в
i, i i . i i i i i i i i i i .
i i i ii, i, i i i i, i i i, (. 4.1.).
( F)
i i p-n - - . Ii i i - i.
i . i i i pE0, nB0 i pC0 i
pi2 = pp0 np0; n i2 = nn0 pn0. | (4.1) |
i p-n - -i (UBE > 0, UBC = 0) p-n - i i i i ii i i, i i (x = 0) i p-n -
(4.2) | |
p(x = 0) = p (0) = p0 exp . | (4.3) |
i i i (x = 0) :
nB'(0) = nB0 | (4.4) |
p'(0) = p0 | (4.5) |
i i i p-n - . i i i i i x i:
nB'(x) = nB0 ; | (4.6) | |
p'(x) = p0 | (4.7) | |
: LpE, LnB - i i i i i i .
WE > LpE
p'(x) = p0 | (4.8) |
i i i, - IF.
. i
IF = q S Dn | (4.9) |
: S - p-n - - , Dn - ii i i i .
i IF i F x = 0 :
IEF = q S (Dn cth + Dp cth ) . | (4.10) |
WE > LpE F :
IEF = q S (Dn cth + Dp exp ) . | (4.11) |
IEF :
IEF = IES , | (4.12) |
|
|
IES :
IES = q S (Dn cth + Dp cth ). | (4.13) |
IBF :
IBF = IEF - IF. | (4.14) |
IS0 :
IS0 = q S Dn . | (4.15) |
IS0 IF :
IF = IS0 . | (4.16) |
ii i bF. :
(4.17) |
T i bF i 100 1000, i i bF 10n.
ii i :
= | (4.18) |
i i ii i i F aF1.
( R)
i . i p-n - - (UBC > 0, UBE = 0) p - n - i i i ii i i, i i (x = WB) :
nB'(x = WB) = nB0 | (4.19) |
(x = WB) = pC0 | (4.20) |
i i i i i x :
nB'(x) = nB'() sh sh | (4.21) |
i i i , WC > LpC, - i
pC'(x) = pC'(WB) exp , | (4.22) |
LpC, LnB - i i i i i .
, WC @ LpC
pC'(x) = pC'(WB) sh /sh . | (4.23) |
. i IR x = 0 :
IR = q S Dn , | (4.24) |
S p-n - -i, Dn ii i i i .
IS0 R (4.15). :
IR = IS0 . | (4.25) |
ICR i R :
ICR = ICS , x = WB, | (4.26) |
ICS , :
ICS = q S (Dn cth + Dp exp ) | (4.27) |
ICS = q S (Dn cth + Dp cth ) WC £ LpC. | (4.28) |
IBR i
IBR = ICR - IR . | (4.29) |
ii i bR WB << LnB :
= | (4.30) |
ii i bR i i i i i i (0,1 - 0,01). i i ii bR i .
ii aR , :
|
|
= = . | (4.31) |
, UBE > 0, UBC < 0, :
; | (4.32) |
. | (4.33) |
ii . UCE UBE :
IC= IS0 | (4.34) |
UCE IB :
= + | (4.35) |
i p-n-i -. ii i i :
(4.36) |
UBRCB - p-n - -; n - ii, i 3 6, i i i ii i i .
i i :
IB = (M-1) IF + IS0. | (4.37) |
IF i i :
IF = | (4.38) |
- :
IC = | (4.39) |
ii
. | (4.40) |
-
(4.41) |
(4.42) |
(4.43) |
-
, | (4.44) |
UA . UA = 50 , IC = 500 , gce 1.10-5 . - rce = 1/ gce - 100 .
gc
, | (4.45) |
RE , ; RB , .