:
N 25
1. , InSb, 2×1015 3 E d = E c 0,001 , . D W = 0,26 . 0,015 m e, 0,5 m e.
2. 0 500 1,027 . , .
3. . ?
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:
N 26
1. 15 , . , 1 300 . , 2. r = 2,26 /, l = 209,3 /(×). .
2. ,
2×1015 3 ? E d = E c 0,01 .
D W = 0,785 . 1,58 m e 0,362 m e.
3. .
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:
N 27
1. ( d 1 = 9 ) ( d 2 = 3 ) . 50 , 0 . , l 1 = 390 /(×), l 2 = 74 /(×). .
2. , (N = 1017 3), 1500 , 0,91 m e 0,595 m e,
mn = 1.45×103 2/(×), mp = 100 2×1×1, E 0.045 . D W = 1,1 .
3. , ( T = 0 ), , .
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:
N 28
1. , . 404 , n = 4,66×1028 -3.
2. = 300 . (mn = bmp) :
mn = 3.8×103 2/(×), b = 2.1. 0.55 me 0.362 me. 0.66 .
3. , ,
,
V , me , E .
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