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Germanium Crystals

CAS #: 7440-56-4

Linear Formula:

MDL Number

MFCD00085310

EC No.:

231-164-3

Chemical Structure

ORDER

Product	Product Code	ORDER	SAFETY DATA	Technical data
(3N) 99.9% Germanium Crystals	GE-E-02-ISX	Pricing Add to cart only	SDS >	Data Sheet >
(4N) 99.99% Germanium Crystals	GE-E-04-ISX	Pricing Add to cart only	SDS >	Data Sheet >
(5N) 99.999% Germanium Crystals	GE-E-05-ISX	Pricing Add to cart only	SDS >	Data Sheet >

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Germanium Crystals Properties (Theoretical)

Molecular Weight	72.61
Appearance	Black Lump
Melting Point	937.4 °C
Boiling Point	2830 °C
Density	5.323 g/cm³
Solubility in H2O	N/A
Poisson's Ratio	0.26
Young's Modulus	103 GPa
Vickers Hardness	N/A
Tensile Strength	N/A
Thermal Conductivity	0.602 W/cm/K @ 302.93 K
Thermal Expansion	6.0 µm/(m·K)
Electrical Resistivity	microhm-cm @ 20 °C
Electronegativity	1.8 Paulings
Specific Heat	0.077 Cal/g/K @ 25 °C
Heat of Fusion	8.3 Cal/gm mole
Heat of Vaporization	68 K-cal/gm atom at 2830 °C

Germanium Crystals Health & Safety Information

Signal Word	N/A
Hazard Statements	N/A
Hazard Codes	N/A
Precautionary Statements	P261-P305 + P351 + P338
Flash Point	Not applicable
Risk Codes	N/A
Safety Statements	N/A
RTECS Number	LY5200000
Transport Information	NONH
WGK Germany	3

About Germanium Crystals

Germanium Crystals for solar energy applications includes p-type and n-type germanium. Germanium and Silicon-based photovoltaic cells (PV Cells) for solar energy are fabricated from a positively charged or p-type silicon layer underneath a negatively charged or n-type silicon layer. These layers can be produced from single crystal silicon material sold under the AE Solar Energy group. Most silicon-based PV solar cells are produced from polycrystalline silicon with single crystal systems the next most common. Silicon Metal is also available as polycrystalline powder for casting, amorphous silicon for deposition, disc, granules, ingot, pellets, pieces, powder , rod, sputtering target, wire, and other forms and custom shapes. Ultra high purity and high purity forms also include submicron powder and nanoscale powder. Single Crystal Germanium is generally immediately available in most volumes.

Synonyms

N/A

Chemical Identifiers

Linear Formula	Ge
Pubchem CID	6326954
MDL Number	MFCD00085310
EC No.	231-164-3
Beilstein/Reaxys No.	N/A
SMILES	[Ge]
InchI Identifier	InChI=1S/Ge
InchI Key	GNPVGFCGXDBREM-UHFFFAOYSA-N
Chemical Formula
Molecular Weight
Standard InchI
Appearance
Melting Point
Boiling Point
Density

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Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Germanium products. Germanium (atomic symbol: Ge, atomic number: 32) is a Block P, Group 14, Period 4 element with an atomic weight of 72.63. The number of electrons in each of germanium's shells is 2, 8, 18, 4 and its electron configuration is [Ar] 3d¹⁰ 4s² 4p². The germanium atom has a radius of 122.5 pm and a Van der Waals radius of 211 pm. Germanium was first discovered by Clemens Winkler in 1886. In its elemental form, germanium is a brittle grayish white semi-metallic element. Germanium is too reactive to be found naturally on Earth in its native state. It is commercially obtained from zinc ores and certain coals. It is also found in argyrodite and germanite. It is used extensively as a semiconductor in transitors, solar cells, and optical materials. Other applications include acting an alloying agent, as a phosphor in fluorescent lamps, and as a catalyst. The name Germanium originates from the Latin word "Germania" meaning "Germany."