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Файл:Физика полупроводников и нанотехнологий. Учебно-методическое пособие
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Учебно-методическое пособие
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Ланге П.К.
22 Физика полупроводников и нанотехнологий: 259"#-$(# . 6#/#9& /
П.К. Ланге. – $!: $!. 1#/. (,". 2"-(, 2017. – 88 /.
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ПРЕДИСЛОВИЕ
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4
РАЗДЕЛ № 1
exp 1
+
Практическое занятие № 1
ИЗУЧЕНИЕ СВОЙСТВ ПОЛУПРОВОДНИКОВ.
ЗОННЫЕ СТРУКТУРЫ
Задание 1.1. .#/(!#&(* 3 ! -(#! MATHCAD 1!&- 2"-%&&
!$&-&!- [1]
f E
( )
=
E E
−
F
kT
6!& 2!#3" !$& EF = 5 ;-3; 2 ;-3; k = 10-3;
6!& ($6!(2!, Т = 10, 100, 300, 600 .
$6#!(&!#3(* 1!&- 3 Microsoft Word (97). .!&$! 6#/(!#"&+
6!&3 " " !&/. 1.1.
1
T 300:= EF 5:=
k 0.001:=
f E( )
:=
exp
1
E EF−
k T⋅
1+
1
f E( )
0.5
0
0 2 4 6 8 10
E
Рис 1.1. !&- 2"-%&& !$&-&!-
5
.#/(!#&(* 1!&-& 2"-%&0 f(E) 6!& EF = 5 ;-3; 6!& ($6!(2-
1
= −
!, Т = 10, 100, 300, 600 " # "#$ 6)" /6)#7"#0 )&"&0, 62"-(&!"#0 & 7(!&,-62"-(&!"#0 )&"&+$&.
Задание 1.2. .#/(!#&(* 3 ! -(#! MATHCAD 1!&- 3#)*(-
$6!"#0 ,!-(!&/(&-& p-n 6!,#
U
k
ϕ
I I e
0
T
3 &6'#" I0 = 0…1 , 6!& φТ = 25 $, I0 = 20 ".
.#/(!#&(* 1!&-& ,!-(!&/(&-& 6!& k = 1; k = 2; k = 4.
.!&$! ,!-(!&/(&-& 6!&3 " " !&/. 1.2.
U
k 2:=
φT 0.025:= I0 10 10
0.05I U( )
0
0 0.2 0.4 0.6 0.8 1
Рис. 1.2. !&- 2"-%&& ,!-(!&/(&-& p-n 6!,#
⋅:= I U( ) I0 e
9−
U
k φT⋅
⋅:=
1−
1#, ""/(& #/& -##! &"( & 1! 2&!#3-2.
,!-(!&/(&-& p-n 6!,# . .!&$! ,!-(!&/(&-& 6!&3 " "
!&/. 1.3.
$6#!(&!#3(* 1!&- 3 Microsoft Word (97), !'1!266&!#3(*
Задание 1.3. .#/(!#&(* 3 ! -(#! MATHCAD #9!("28 3(3*
6
T
I
ϕ
;
kT
q
U
I U( ) I0 e
1.10
9.10
8.10
7.10
6.10
I U( )−
5.10
4.10
3.10
2.10
1.10
7
8
8
8
8
8
8
8
8
8
0
0 2 4 6 8 10
k φT⋅
⋅:=
1−
U−
Рис. 1.3. !&- 2"-%&& #9!("#0 ,!-(!&/(&-& p-n 6!,#
$6#!(&!#3(* 1!&- 3 Microsoft Word (97), !'1!266&!#3(*
1#, ""/(& #/& -##! &"( & 1! 2&!#3-2.
Практическое занятие № 2
ИЗУЧЕНИЕ СВОЙСТВ P-N ПЕРЕХОДА.
ХАРАКТЕРИСТИКИ P-N ПЕРЕХОДОВ
Задание 2.1. .#/(!#&(* 3 ! -(#! MATHCAD '3&/&$#/(* /#-
6!#(&3)"&+ p-n 6!,# [2] #( (#- 5!' "1#.
/,# "4 ""4:
ϕ
r
=
, φ = 25 $ 6!& Т = 20 °;
=
T
k = 1,38?10
-23
:/);
q = 1,6?10
-19
).
.!&$! 1!&- '3&/&$#/(& 6!&3 " " !&/. 2.1.
7
φT 0.025:= I 0.1 0.2, 10..( ):= r I( )
q N
⋅ ⋅ ⋅
0.05r I( )
0
0 2 4 6 8 10
φT
:=
I
I
Рис. 2.1. 3&/&$#/(* /#6!#(&3)"&+ p-n 6!,# #( (#- 5!' "1#
.#/(!#&(* 1!&-& r(I) 6!& Т = +40; +20; 0;-20 °.
$6#!(&!#3(* 1!&- 3 Microsoft Word (97), !'1!266&!#3(*
1#, ""/(& #/& -##! &"( & 1! 2&!#3-2.
Задание 2.2. .#/(!#&(* 3 ! -(#! MATHCAD '3&/&$#/(* 9-
!*!"#0 $-#/(& p-n 6!,# #( #9!("#1# "6!+:"&+. @( '3&/&$#/(* #6! )+(/+ 34!:"&$ [3]
0,5
ϕ
ε
U
+
0
,
C
=
1 N – -#"%"(!%&+ 6!&$/&;
NA – -#"%"(!%&+ -%6(#!"#0 6!&$/&;
ND – -#"%"(!%&+ #"#!"#0 6!&$/&;
φ
= kT/q – ($6!(2!"40 6#("%&);
0
k = 1,38?10
ε = 9?10
-23
:/); q = 1,6?10
-14
– &;)-(!&5/-+ 6!#"&%$#/(*.
)+ 1!$"&+ N
= 1016c$-3; ND = 1019c$-3.
A
-19
8
);
.!&$! 6#/(!#"&+ (-#0 ,!-(!&/(&-& 6!&3 " " !&/. 2.2.
14
NA 10
16
:= ND 10
U 1 1.1, 10..:=
0.5 ε⋅ q⋅ NA⋅
C U( )
C U( )
1.10
8.10
6.10
4.10
:=
8
9
9
9
19
:= q 1.6 10
⋅:= ε 9 10
U
19−
−
⋅:=
2.10
9
0 2 4 6 8 10
U
Рис. 2.2. .!&$! 6#/(!#"&+ 1!&- '3&/&$#/(& $-#/(&
p-n 6!,# #( #9!("#1# "6!+:"&+
.#/(!#&(* 1!&-& (U) )+ NA = 1014; 1016; 1018.
$6#!(&!#3(* 1!&- 3 Microsoft Word (97), !'1!266&!#3(*
1#, ""/(& #/& -##! &"( & 1! 2&!#3-2.
Практическое занятие № 3
АНАЛИЗ ХАРАКТЕРИСТИК ДИОДНЫХ ЦЕПЕЙ.
ИЗУЧЕНИЕ МЕТОДОВ ИССЛЕДОВАНИЯ ДИОДНЫХ ЦЕПЕЙ
Задание 3.1. 6! )&(* (#!(&5/-& "6!+:"& U
3 ' "-
"#$ 3!&"( !'&/(&3"#- &# "#0 %6&. 5&((* &# 4 & )*"4$&.
Задание 3.2. ! -(#! Multisim /#9!(* ' ""40 3!&"(
/,$4 (!&/. 3.1-3.10). '$!&(* "6!+:"& U
.
!3"&(* &'$!"-
"# '"5"& /# '"5"&$, 345&/)""4$ (#!(&5/-&.
9
U
R 1-
R 4-
U1 20
R 2- R 1-
R
40
R
R
VD1
VD2
VD3
U 15
R4 2-
R3 2-
R2 1-
R1 1-
U
Рис. 3.1. !&"( 1
U1 20
U
Рис. 3.2. !&"( 2
U1
Рис. 3.3. !&"( 3
10
U
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