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Ge substrate

Ge substrate

Introduction:

As a rare metal, germanium has many special properties: good chemical stability, strong corrosion resistance, easy processing, high and uniform transmittance, high refractive index, high radiation resistance, high frequency and good photoelectric performance.
The germanium substartes alwayls can be used for fabrication of semiconductor devices, infrared optics, and solar cell substrates.

Physical Properties

Material Germanium
Growth Method CZ
Structure M3
Lattice (A) a=5.65754
Melting point 937.4℃
Density(g/cm3) 5.323 g/cm3
Doped Material undoped   Sb-doped In/Ga-doped
Type     / N P
Resistivity >35 Ωcm 0.05 Ωcm 0.05~0.1 Ωcm
Thermal-expans <4 x103/cm2 <4 x103/cm2 <4 x103/cm2

Specification

Size 10x3, 10x5, 10x10, 15x15, 20x 15, 20x 20,Dia 1'', Dia 2''
Thickness 0.33mm, 0.43mm 0.5mm, 1.0mm
Polished SSP or DSP
Orientation <100>,<110>, <111>
Redirection precision ±0.5°
Ra: ≤5Å(5µm×5µm)

Package

100 clean bag, 1000 exactly clean room
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