Aluminium gallium arsenide
（重定向自AlGaAs）
![The crystal structure of aluminium gallium arsenide is zincblende.](/Images/godic/202412/18/Sphalerite-unit-cell-depth-fade-3D-balls1033.png")
![](/Images/godic/202412/18/Sphalerite_polyhedra.1033.png")
Aluminium gallium arsenide (also aluminum gallium arsenide) (AlxGa1-xAs) is a semiconductor material with very nearly the same lattice constant as GaAs, but a larger bandgap. The x in the formula above is a number between 0 and 1 - this indicates an arbitrary alloy between GaAs and AlAs.