Germanium Ingots0 pages

Germanium Ingots
Ge/1009
Specifica- Polycrystalline ingots 50 Ω.cm
tions Resistivity and type:

Formats

Guaranteed to exceed 50 Ω.cm n-type over the whole length.
Measurements are made at 20 ± 0,5 °C by the 2-point probe method (ASTM
F48-93) and thermoelectric probe method (ASTM F42-93-A) on the bottom
surface of the ingot.
Monocrystalline ingots (L.M.C.)
Net impurity concentration:
Lower than 1012 cm-3 as calculated from resistivity measurements at 77 K by
the Van der Pauw method on head and tail slices (ASTM F76-86)
Ingots present a smooth etched surface without clouding.
Length: from 100 mm to 400 mm, or upon request
Formats (see figure)
for polycrystalline ingots 50 Ω.cm
weight: ± 70 gram per linear cm
trapezoidal cross section
for monocrystalline ingots (LMC)
weight: 60-70 gram per linear cm
trapezoidal cross section

A ≈ 48 mm
B ≈ 42 mm
H ≈ 39 mm
Angle ≈ 5 mm
A ≈ 39,5 mm
B ≈ 34 mm
H ≈ 32,5 mm
Angle ≈ 6 mm

α

A

H

B

Packing Germanium ingots are heat sealed between a tough plastic sheet and a firmsupporting base. They are then packed in cardboard boxes, filled with shock
absorbing materials

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