/ n - , .
/ - ,
/.
/ n.(.3.5)
.3.5 /
:
1- ,- ( ).
2- , - , ( ).
- const, , 1,2 .
3 - ( ).
/ 2, .
2 .
(), - (),
- .
. , 10-8 10-4 . .. () . .
*) , , .
(l), (t) (V),
l = V t (3.10)
[V ~ 105 /]
V, = (q/m) E = mE (3.11)
q ;
m ;
E
m ,
. . - , , 1/.
/ | Ge | Si | GaAs | SiC |
mn [2/.] | 0.39 | 0.13 | 0.02-0.1 | |
mp [2/.] | 0.19 | 0.05 | 0.04 | 5.10-4 |
|
|
/ =300 , m ~1/E, . V~ const~5.104 / (~5/)
: U=1B; l=100 (100 10-9); E= 10 /) [E=U/l]
.3.6
(/2), :
Jn = qnmnE (3.12)
q - . n /.
,
JP = qpmPE (3.13)
:
J = qnmnE + qpmPE (3.14)
n, p .
:
~ . * (s-)
J = s E = (1/r) E (3.15)
(3.15) (3.12, 3.13),
s = mnqn + mpqp (3.16)
c J S
I = JS (3.17)