NA ND

1
????? ?????? ?????? ?????
2
????? ??????? ???? ???? (?????) ?? NA ? ND
????? ????? (????? ?? ???? ?????) ????? ?????
????? ????? ?????? ????? ?? ???????
3
N
P
x
0
???? ?????
????
2. "????? ??????" ????? ????? ????? ????????
????? ????? ??? ???.
4
????? ????
ND
dP
x
-dn
0
NA
5
????? ???????
6
????? ?? ????
??? ???? ???? ????? ??????????
7
N
P
???? ?????
EC2
VbiVt
EFi
EC1
EF
EV2
EV1
???? ???? ?????
8
(No Transcript)
9
????? ?????? ????? ???? ????? ?? ???? ???????
?????? ???? ???? ND1018cm-3 ? NA1015cm-3
????? ???????- ni22x1020cm-6 , ?12 ???. ???
kT/q0.026mV
???? ????? ???? VtVB
10
?? ???? ???? ????? ??? ???????
???? ???? ?????
??? ????
R2gtgtR1,R3
??? ????
11
??? ???? VtVBVA
VA
VA
??? ???? VtVB-VA
???? ??? ???? ?? 50v
VtVBVA ?VA50v
???? ?????? ????? ?? ?????? ????? ?????
12
??? ?? ???? ????? ?????? ????
13
(No Transcript)
14
???? ????
????? ????? ???? ????? ????? ???? ??? ??? ???
15
??????? ??????
???? ?????