Cadmium Telluride
CdTe
CdTe CdHgTe

CdTe

CdHgTe

Crystal properties

Application fields:

IR optics, substrates, detectors, 
crystal pieces for vacuum deposition.

Structure

Cubic zincblende

Density

5.85 g/cm3

Knoop Hardness

45 kg/mm2

Young’s Modulus

3.7 x1011 dyne/cm2

Rupture Modulus

2.2 x108 dyne/cm2

Poisson Ratio

0.41

Coef. of Thermal Expansion

5.9 x 10-6/K

Specific Heat

0.21 J/gK

Thermal conductivity (at 25 oC)

0.06 W/cmK

Max. Transmittance (l =7-12 μm)

66 %

Absorption Coef. (l =10.6 μm)

£ 0.003 cm-1 (including 2 surfaces)

Thermo-Optic Coef. (dn/dT)

11.0 (l =10.6 μm)

Refractive index (l =10.6 μm)

2.69

Max. IR-optic blank diameter/length

l 40 x 45 mm

Max. single crystal diameter/length

l 40 x 30 mm