Atomic number

14

Molecular weight

28.29

60.08

140.28

g/mol

Density at 300 K

2.33

2.27

3.0

g/cm ^-3

Relative permittivitynb (Dielectric constant)

11.7

3.9

7 7.5

Breakdown field (Dielectric strength)

3 10 ⁵

8 10 ⁶

1 10 ⁷

V/cm

Refractive index

3.42

1.46

2.05

Thermal conductivity

1.412

0.01.4

W/cm.K

Lattice constant

5.431

Energy gap E _g

1.12

8.0

5.0

eV

Intrinsic carrier concentration n _i

1.45 10 ¹⁰

cm ^-3

Intrinsic Debye length

2.4 l0 ^-5

cm

Bulk electron mobility ? _n

1350

2 30

cm ²/V.s

Bulk hole mobility ? _p

480

cm ²/V.s

Electronic charge

q

1.602 10 ^-19

C

Free-electron mass

m

9.11 10 ^-28

g

Boltzmann's Constant

k

1.38 10 ^-23

J/K

8.62 10 ^-5

eV/K

Planck's Constant

h

6.25 10 ^-34

J.s

Permittivity of free space

? ₀

8.854 10 ^-14

F/cm

Thermal voltage at 300 K

V _t = KT/ q

0.02586

V

Thermal energy at 300 K

kT

0.02586

eV

1 ?m

(micrometer or micron) = 10 ^-6 meters = 10 ^-4 cm = 10 ⁴ ?