Aluminium arsenide

Aluminium arsenide (also aluminum arsenide), AlAs, is a semiconductor material with almost the same lattice constant as GaAs and AlGaAs and wider band gap than GaAs.

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It has the appearance of orange cubic crystals, with melting point of 1740 °C and density of 3.76 g/cm³. It is hygroscopic.

Its CAS number is [22831-42-1].

It can be used to form quantum well structures with GaAs.

See also

• Aluminium antimonide
• Boron arsenide
• Aluminium gallium arsenide
• Aluminium indium arsenide