ND1

1
??? ???? ????? ??? ???? ???????
ND1
ND2
ND210 ND1
?? ?? ?? ?????? ???? ???????
EC
EV
?? ?? ??????? ???? ??? ??? ????? ????
1
2
2
ND20

??? ??????? ????? ?? ?????? ?????? ????!!!
Charge
Electric Field
Electron Band Diagram
3
NC ? f ?
?????? ?? ?????? ??????
EF ????? ??? ???? ????? ??? ??? ??????? () ??????
4
????? ????? EFltltEC
5
?????? ??? ????
1. ?????? ???? ???? ???? ????? ????? ??????
??? ???? ???? ????? ?????
2. ??? ???? ????? ?? ????? ??????? ?? ???????
(?????? ??????)
3. ???? ???????? (???) ??? ??? ?????? ? ???? ???
???? ????
4. ???? ???? ???? ??? ???? ????? ?????
6
???? - ?????? ?????? ??"? ???? ??????? ?????? ??
???????????
EC
7
??? ???? ????? ??? ???? ???????
ND1
ND2
ND210 ND1
?? ?? ?? ?????? ???? ???????
EC
EV
?? ?? ??? ??? ???? ???? ???? ??? ???? ?????
8
E
E
EC
EC
X
NC
EF
NV
X
EV
EV
????? ???? ???? ?????, ????? ??? -
?????????
????? ???? ???? ??? ?????, ????? ??? -
??? N
????? ???? ???? ??? ??????, ????? ??? -
??? P
9
????? ????? ???? ?????????
???? ???? ?????????
10
????? ??????? ??????? ????
EFltltEC ??
EVltltEF

• ???? ??? ???? ????? ?? ??? ???
• ?????? ?????? ??? ???????
• ?? ???? ???? ?? ????. ???? ????? ???????? ????
  (??????)
• ???????? ??????? ?? ???????
• ? ?????? ?????? ?????