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Virtual Lab: Semiconductor Crystals
Data on Common Semiconductors
Atomic
Weight
Mass
Density
?
Number
Density
Lattice
Constant
a
o
Dielectric
Constant
?
Bandgap
E
g
Electron
Affinity
?
Conduction Band
Density of States
N
c
Valence Band Density of States
N
v
Intrinsic Carrier Concentration
n
i
(g/cm
3
)
(#/cm
3
)
(�)
(ratio)
(eV)
(Volts)
(#/cm
3
)
(#/cm
3
)
(#/cm
3
)
Si
28.09
2.33
5.0x10
22
5.43
11.7
1.12
4.01
2.8x10
19
1.04x10
19
1.5x10
10
Ge
72.60
5.33
4.42x10
22
5.65
16.0
0.67
4.13
1.04x10
19
6.0x10
18
2.4x10
13
AlAs
3.60
5.66
10.9
2.16
3.5
GaAs
144.63
5.52
4.42x10
22
5.65
13.1
1.42
4.07
4.7x10
17
7.0x10
18
1.8x10
6
GaN
3.2/5.2
12.2
3.36
GaP
5.45
11.1
2.26
4.3
GaSb
6.1
15.7
0.72
InAs
6.06
14.6
0.36
InP
5.87
12.4
1.35
12.1
InSb
6.48
17.7
0.17
CdSe
6.05
10
1.70
CdS
5.83
5.4
2.42
ZnS
3.8/6.3
5.2
3.68
