Gallium arsenide

Gallium arsenide is a chemical compound. Its chemical formula is . It has gallium and arsenide atoms in it. The gallium is in the +3 oxidation state.

Properties
Gallium arsenide is a gray solid. It makes crystals in a cube shape. It reacts slowly with water and quickly with acids to make arsine. It oxidizes in air.

Preparation
It is made by reacting arsenic trichloride or arsenic with gallium.

Uses
Gallium arsenide is mainly used as a semiconductor. It has several things better about it than silicon. The semiconductors made are faster and higher power. LED's using gallium arsenide are efficient. Silicon, though is cheaper. Silicon dioxide is a good insulator; gallium arsenide does not make a good insulator like silicon does. Silicon semiconductors also take less power than gallium arsenide ones.

Related pages
Aluminium arsenide
Gallium(III) oxide

Category:Arsenic compounds
Category:Gallium compounds
Category:Semiconductors