4353. Gallium Phosphide

Nomenclature

CAS number: 12063-98-8
GaP; mol wt 100.70.
Ga 69.24%, P 30.76%.

Description and references

Prepn and description: Folberth, Oswald, Z. Naturforsch. 9a, 1050 (1954); Wolff et al., Phys. Rev. 94, 753 (1954); Antell, Effer, J. Electrochem. Soc. 106, 509 (1959); 107, 252 (1960); Frosch, Derick, ibid. 108, 251 (1961); Addamiano, J. Am. Chem. Soc. 82, 1537 (1960); Gershenzon, Mikulyak, ibid. 108, 548 (1961); Pizzarello, ibid. 109, 226 (1962). Seguin, Gans, US 2862787 (1958); Chang, US 2921905 (1960 to Westinghouse).

Properties

Translucent, amber-colored crystals of the zinc blende type. Greenish-yellow, opaque cryst mass, when unreacted gallium is present. mp 1465°. Dielectric constant 8.4. Energy gap 2.25 ev. Hole mobility 70. Electron mobility 1200. Current density at 4 volts = 25 amps/cm2 at 25° (in rectifier circuitry).

Use

In semiconductor electronics.