GT19 · Physical Constants
k = 8.62 x 10-5 eV/K
q = 1.6 x 10-19 C
ε0 = 8.85 x 10-14 F/cm
at room temperature
NA = 6.02 x 1023 molecules/mole = Avogadro’s number
Room Temperature Values for Semiconductors and Insulators
|
Material |
Eg (eV) |
χ (V) |
εr |
ε (pF/cm)1 |
ni (cm-3) |
N (cm-3) |
|
Si |
1.1 |
4.03 |
11.8 |
1.04 |
1.5 x 1010 |
5 x 1022 |
|
Ge |
0.67 |
4.0 |
16 |
1.42 |
2.5 x 1013 |
4.42 x 1022 |
|
GaAs |
1.43 |
4.07 |
13.2 |
1.17 |
9.0 x 107 |
2.21 x 1022 |
|
SiO22 |
8 |
1 |
3.9 |
0.345 |
|
2.3 x 1022 |
|
Si3N42 |
5 |
|
7.5 |
0.664 |
|
|
1ε = ε0εr
2 amorphous
Work Functions of Metals
|
Metal
|
Al, Pb
|
Mo
|
Cr
|
Au
|
Ni
|
Pt |
|
φ (V) |
4.0 |
4.3 |
4.6 |
4.7 |
5.1 |
5.3 |
|