Product Name
Germanium single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (110) orientation, ±0.5°
Category
Single Crystals; Thermoelectric Materials
Synonyms
germanium nanopowder suspension, aqueous germanium nanoparticle solution, germanium nanofluid
Description
PelletsLargeCrystals, WetSolid, OtherSolid
Molecular Weight
72.63g/mol
InChI Key
GNPVGFCGXDBREM-UHFFFAOYSA-N
Purity
99%, 99.9%, 99.99%, 99.999%
Density
5.323 @ 25 °C/4 °C
Solubility
INSOL IN WATER, HYDROCHLORIC ACID, DIL ALKALI HYDROXIDES;SOL IN HOT SULFURIC ACID, AQUA REGIA; INSOL IN ALKALI
Appearance
Liquid dispersion
Application
The Germanium single crystal disc, with its precise (110) orientation and dimensions of 10mm in diameter and 1-3mm in thickness, serves critical applications due to its unique semiconductor properties. This product is essential for the manufacture of high-performance electronic components, such as germanium diodes and transistors, which capitalize on its capability to efficiently rectify and amplify electrical signals. Additionally, its utility extends to infrared optical systems, where germanium's ability to transmit infrared radiation is harnessed in lenses and filters integral to laser and infrared detection technologies. The metalloid's ability to form stable compounds at varying oxidation states further enhances its role in specialized alloys and advanced optical materials, making it invaluable in a range of technological applications where precision and efficiency are paramount.
Color/Form
GRAYISH-WHITE, LUSTROUS, BRITTLE METALLOID; DIAMOND-CUBIC STRUCTURE WHEN CRYSTALLINE
Covalently-Bonded Unit Count
1
Hazard Statements
H315-H319-H335
Heat of Vaporization
3.5733X10+8 J/kmol @ melting point
MeSH Entry Terms
Germanium
Monoisotopic Mass
73.921178g/mol
Morphology
nearly spherical
Other Experimental
THERMAL EXPANSION COEFFICIENT AT APPROX 25 °C: 6.1X10-6 °C; THERMAL CONDUCTIVITY @ 25 °C: 0.14 CAL/SEC CM/DEG C; SPECIFIC HEAT (0-100 °C): 0.074 CAL/G/DEG C;LATTICE CONSTANT @ 25 DEG: 5.657X10-8 CM; VOL COMPRESSIBILITY: 1.3X10-12 SQ CM/DYN; DIELECTRIC CONSTANT: 16; MAGNETIC (MASS) SUSCEPTIBILITY (CHI X10+6)= -0.12;COVALENT BOND IONIZATION ENERGY @ 0 DEG K= 1.2 ELECTRON VOLT; BAND GAP: 0.67 ELECTRON VOLT; ATOMS/CC= 4.42X10+22; IMPURITY ATOM IONIZATION ENERGY: APPROX 0.01 ELECTRON VOLT; INTRINSIC RESISTIVITY @ 300 DEG K= 47 OHM-CM;ELECTRON MOBILITY @ 300 DEG K: 3900 SQ CM/V SEC; HOLE MOBILITY @ 300 DEG K= 1900 CM/V SEC; HOLE DIFFUSION CONSTANT @ 300 DEG K= 49;INTRINSIC CHARGE DENSITY @ 300 DEG K= 2.4X10+13; ELECTRON DIFFUSION CONSTANT @ 300 DEG K= 100;IS HIGHLY TRANSPARENT TO INFRARED LIGHT; HAS A HIGH INDEX OF REFRACTION;THE METAL & MANY OF ITS ALLOYS EXPAND ON SOLIDIFICATION;FIVE NATURALLY OCCURRING ISOTOPES: 70 (20.55%); 72 (27.37%); 73 (7.67%); 74 (36.74%); 76 (7.67%); ATOMIC NUMBER 32;POOR CONDUCTOR OF ELECTRICITY; VOL SMALLER BY FEW % WHEN MOLTEN; ATTACKED BY AQUA REGIA, CONCN NITRIC OR SULFURIC ACIDS, FUSED ALKALIES, ALKALI PEROXIDES, NITRATES, OR CARBONATES;HARDNESS 6 ON MOHS SCALE;Liquid molar volume = 0.013001 cu m/kmol determined at the triple point.;IG heat of formation = 3.766X10+8 J/kmol (ideal gas); for the crystal the enthalpy of formation is 0 at 298.15 K.;Heat of fusion at melting point = 3.18X10+7 J/kmol.
Safety Description
26-36/39
Stability
RELATIVELY STABLE, UNAFFECTED BY AIR, BECOMES OXIDIZED ABOVE 600 °C
UNII
619P6J82AE;00072J7XWS
Vapor Pressure
0 mm Hg @ 25 °C