:
N 12
1. , 0,1 ,
1000 300 ?
2. (300 )
3800 2/(×). 30 , , , . 0,55 me, 0,36 me. , 0,785, 2,1.
3. , -
t .
. ______________
:
N 13
1. Cs ( F = 1,53 , r = 1,87.103 /3, m = 133 /) .
2. = 300 . (mn = bmp) :
mn = 1.45×103 2/(×), b = 2.9. 0.55 me 0.595 me. 1.1 .
3. , -
t .
. ______________
:
N 14
1. 100 200 500 8300 . , , .
2. 120 25,7 . , , . (mn = bmp) :
mn = 1.45×103 2/(×), b = 2.9. r Si = 2,33×103 /3,
m Si = 28×103 /. m P = 31×103 /.
3. , dn (E) E E + dE ( ,
T =0 ): ) , n; ) , EF.
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