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Virtual Lab: Semiconductor Crystals
University of Virginia
             

Data on Common Semiconductors

Atomic
Weight
Mass
Density

ρ

Number
Density

Lattice
Constant

ao

Dielectric
Constant

ε

Bandgap

Eg

Electron
Affinity

χ

Conduction Band
Density of States

Nc

Valence Band Density of States

Nv

Intrinsic Carrier Concentration

ni

(g/cm3)
(#/cm3)
(Å)
(ratio)
(eV)
(Volts)
(#/cm3)
(#/cm3)
(#/cm3)
Si
28.09
2.33
5.0x1022
5.43
11.7
1.12
4.01
2.8x1019
1.04x1019
1.5x1010
Ge
72.60
5.33
4.42x1022
5.65
16.0
0.67
4.13
1.04x1019
6.0x1018
2.4x1013
AlAs
3.60
5.66
10.9
2.16
3.5
GaAs
144.63
5.52
4.42x1022
5.65
13.1
1.42
4.07
4.7x1017
7.0x1018
1.8x106
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