Aluminium antimonide
Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.042.410 |
EC Number |
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PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
AlSb | |
Molar mass | 148.742 g/mol |
Appearance | black crystals |
Density | 4.26 g/cm3 |
Melting point | 1,060 °C (1,940 °F; 1,330 K) |
Boiling point | 2,467 °C (4,473 °F; 2,740 K) |
insoluble | |
Band gap | 1.58 eV |
Refractive index (nD)
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3.3 |
Structure | |
Zinc blende | |
T2d-F-43m | |
Tetrahedral | |
Thermochemistry | |
Std molar
entropy (S |
65 J/mol K |
Std enthalpy of
formation (ΔfH⦵298) |
-50.4 kJ/mol |
Hazards | |
Safety data sheet (SDS) | MSDS |
NFPA 704 (fire diamond) |
0
3
1 |
317 °C (603 °F; 590 K) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
what is ?) | (|
Infobox references | |
Aluminium antimonide (AlSb) is a semiconductor of the group III-V family containing aluminium and antimony. The lattice constant is 0.61 nm. The indirect bandgap is approximately 1.6 eV at 300 K, whereas the direct band gap is 2.22 eV.
Its electron mobility is 200 cm²·V−1·s−1 and hole mobility 400 cm²·V−1·s−1 at 300 K. Its refractive index is 3.3 at a wavelength of 2 μm, and its dielectric constant is 10.9 at microwave frequencies.[1]
AlSb can be reacted with other III-V materials to produce ternary materials including , and .
Aluminum antimonide is rather flammable because of the reducing tendency of the antimonide (Sb3−) ion. It burns to produce aluminum oxide and antimony trioxide.
See also[]
References[]
- ^ K Seeger and E Schonherr "Microwave dielectric constant of aluminium antimonide" Semicond. Sci. Technol. 6 (1991) 301 doi:10.1088/0268-1242/6/4/013
Categories:
- III-V semiconductors
- Antimonides
- Aluminium compounds
- III-V compounds
- Zincblende crystal structure
- Inorganic compound stubs