High Purity Germanium

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MATERIAL OVERVIEW

Characteristics: Lustrous, hard, grayish-white solid metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Purified germanium is a 'p-type' semiconductor material.  Conductivity depends largely on added impurities. Germanium shows similarities to silicon in that it naturally reacts and forms complexes with oxygen in nature. Unlike silicon, it’s too reactive to be found naturally on Earth in a native state.

Attacked by nitric acid and aqua regia, but stable in water, acids, and alkalies in absence of dissolved oxygen.  Low toxicity.

Isolated germanium is princiapally used as a semiconductor material for transistors. The first generation of semiconductors were based solely on germanium. However, most of today’s semiconductor production is based on silicon and germaniums use in electronics are in fibre-optic systems, infrared optics and in solar cell applications.

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GENERAL PROPERTIES

Symbol:

Ge

Atomic Number:

32

Atomic Weight:

72.59

Density:

5.323 gm/cc

Melting Point:

937.4 oC

Boiling Point:

2830 oC

Thermal Conductivity:

0.602 W/cm/K @ 302.93 K

Electrical Resistivity:

microhm-cm @ 20 oC

Electronegativity:

1.8 Paulings

Specific Heat:

0.077 Cal/g/K @ 25 oC

Heat of Vaporization:

68 K-cal/gm atom at 2830 oC

Heat of Fusion:

8.3 Cal/gm mole

 

TYPICAL ANALYSES - Impurities in ppm

Material / Purity:

5N+

Si 0.9
Cu 0.5

GERMANIUM POWDER, SHOT, PELLETS, & INGOT

Material

Purity

Germanium Pieces 3-12mm 5N, 6N
Germanium Ingot 5N, 6N
Germanium Powder, -60 Mesh 3N, 5N
Germanium Powder, -325 Mesh 3N, 5N 

Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

GERMANIUM COMPOUNDS

Material

Purity

Germanium Iodide GeI2 , GeI4 -10 Mesh 5N
Germanium Selenide GeSe 1/4" Pieces by Down 5N
Germanium Sulfide GeS2 -100 Mesh 5N
Germanium Sulfide GeS -20 Mesh 5N

Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

 

Material Safety Data Sheet - MSDS
Germanium MSDS
Technical Data Sheets
Understanding Mesh Sizes