CAS 7440-56-4 Germanium Nanoprisms - Materials / Alfa Chemistry

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Germanium Nanoprisms

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Catalog Number

ACM7440564-1

CAS Number

7440-56-4

Product Name

Germanium Nanoprisms

Category

Windows & Spheres

Description

PelletsLargeCrystals, WetSolid, OtherSolid

IUPAC Name

germanium

Molecular Weight

72.61

Molecular Formula

Canonical SMILES

[Ge]

InChI

InChI=1S/Ge

InChI Key

GNPVGFCGXDBREM-UHFFFAOYSA-N

Boiling Point

2830 °C

Melting Point

937 °C

Purity

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

grayish-white

Application

Germanium Nanoprisms serve as a versatile component harnessing the unique properties of germanium, a metalloid known for its semiconductor capabilities and use in infrared applications. Derived as a by-product of processes like zinc smelting, germanium's ability to form stable +4 oxidation state compounds lends itself to advanced technological applications. The Germanium Nanoprisms capitalize on these characteristics, functioning well in the production of devices requiring infrared light transmission, such as lenses and windows in laser and infrared detection systems. Additionally, their semiconductor properties make them valuable in the fields of electronics, particularly for the creation of efficient rectifying devices like transistors and diodes. These nanostructures thus provide cutting-edge solutions in electronics and optical technologies, leveraging the high refractivity and dispersion of germanium-based materials for precision and performance.

Average Particle Size

70-120 nm

Color/Form

GRAYISH-WHITE, LUSTROUS, BRITTLE METALLOID; DIAMOND-CUBIC STRUCTURE WHEN CRYSTALLINE

Complexity

Covalently-Bonded Unit Count

EC Number

231-164-3

Exact Mass

73.921178g/mol

Formal Charge

Heat of Vaporization

3.5733X10+8 J/kmol @ melting point

Heavy Atom Count

MDL Number

MFCD00085310

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.

Particle Size

70-120 nm

Precautionary Statements

P210

Ratio

0.26

Rotatable Bond Count

RTECS Number

LY5200000

Signal Word

Danger

Stability