Aluminium antimonide

  (Redirected from AlSb)

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.

Aluminium antimonide
Aluminium-antimonide-unit-cell.png
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.042.410 Edit this at Wikidata
EC Number
  • 246-667-3
UNII
  • InChI=1S/Al.Sb checkY
    Key: LVQULNGDVIKLPK-UHFFFAOYSA-N checkY
  • InChI=1/Al.Sb/rAlSb/c1-2
    Key: LVQULNGDVIKLPK-XFZGNPHIAJ
  • [SbH+]12[Al-][SbH+]3[Al-][SbH+]([AlH-]14)[AlH-]1[Sb+]5([AlH-]38)[Al-]26[SbH+]2[AlH-]([Sb+]4)[SbH+]1[Al-][SbH+]3[AlH-]2[Sb+][AlH-]([SbH+]6[AlH-]([SbH+])[SbH+]68)[SbH+]([Al-]6)[AlH-]35
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
3.3
Structure
Zinc blende
T2d-F-43m
Tetrahedral
Thermochemistry
65 J/mol K
-50.4 kJ/mol
Hazards
Safety data sheet 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).
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Infobox references

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 AlInSb, AlGaSb and AlAsSb.

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 alsoEdit

ReferencesEdit

  1. ^ K Seeger and E Schonherr "Microwave dielectric constant of aluminium antimonide" Semicond. Sci. Technol. 6 (1991) 301 ‹See Tfd›doi:10.1088/0268-1242/6/4/013