Gallium arsenide

Gallium arsenide
	; GaAs wafer of (100) orientation
Names
	Preferred IUPAC name Gallium arsenide
Identifiers
CAS Number	1303-00-0 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	14087 ;
ECHA InfoCard	100.013.741
EC Number	215-114-8;
MeSH	gallium+arsenide
PubChem CID	14770;
RTECS number	LW8800000;
UNII	27FC46GA44 ;
UN number	1557
CompTox Dashboard (EPA)	DTXSID2023779 ;
	InChI InChI=1S/AsH3.Ga.3H/h1H3;;;; Key: SHVQQKYXGUBHBI-UHFFFAOYSA-N ;
	SMILES [Ga]#[As]; [Ga+3].[As-3];
Properties
Chemical formula	GaAs
Molar mass	144.645 g/mol
Appearance	Gray crystals
Odor	garlic-like when moistened
Density	5.3176 g/cm3
Melting point	1,238 °C (2,260 °F; 1,511 K)
Solubility in water	insoluble
Solubility	soluble in HCl ; insoluble in ethanol, methanol, acetone
Band gap	1.424 eV (at 300 K)
Electron mobility	9000 cm2/(V·s) (at 300 K)
Magnetic susceptibility (χ)	-16.2×10−6 cgs
Thermal conductivity	0.56 W/(cm·K) (at 300 K)
Refractive index (nD)	3.3
Structure
Crystal structure	Zinc blende
Space group	T2d-F-43m
Lattice constant	a = 565.315 pm
Coordination geometry	Tetrahedral
Molecular shape	Linear
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H350, H360F, H372
Precautionary statements	P261, P273, P301+P310, P311, P501
NFPA 704 (fire diamond)	3 0 0
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Gallium nitride; Gallium phosphide; Gallium antimonide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Gallium arsenide (GaAs) is a III-V direct band gap semiconductor with a zinc blende crystal structure.

Gallium arsenide is used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells and optical windows.^[6]

GaAs is often used as a substrate material for the epitaxial growth of other III-V semiconductors, including indium gallium arsenide, aluminum gallium arsenide and others.

^ ^a ^b ^c ^d Haynes, p. 4.64
^ Blakemore, J. S. "Semiconducting and other major properties of gallium arsenide", Journal of Applied Physics, (1982) vol 53 Nr 10 pages R123-R181
^ Haynes, p. 12.90
^ ^a ^b Haynes, p. 12.86
^ ^a ^b Haynes, p. 12.81
^ Cite error: The named reference Moss was invoked but never defined (see the help page).

[crc-1] Haynes, p. 4.64

[Blakemore1982-2] Blakemore, J. S. "Semiconducting and other major properties of gallium arsenide", Journal of Applied Physics, (1982) vol 53 Nr 10 pages R123-R181

[crc4-3] Haynes, p. 12.90

[crc3-4] Haynes, p. 12.86

[crc2-5] Haynes, p. 12.81

[Moss-6] Cite error: The named reference Moss was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[5]

[6]

Names

GaAs wafer of (100) orientation
Preferred IUPAC name Gallium arsenide
Identifiers
CAS Number	1303-00-0^Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	14087^Y
ECHA InfoCard	100.013.741
EC Number	215-114-8
MeSH	gallium+arsenide
PubChem CID	14770
RTECS number	LW8800000
UNII	27FC46GA44^Y
UN number	1557
CompTox Dashboard (EPA)	DTXSID2023779
InChI InChI=1S/AsH3.Ga.3H/h1H3;;;;^N Key: SHVQQKYXGUBHBI-UHFFFAOYSA-N^N
SMILES [Ga]#[As] [Ga+3].[As-3]
Properties
Chemical formula	GaAs
Molar mass	144.645 g/mol^[1]
Appearance	Gray crystals^[1]
Odor	garlic-like when moistened
Density	5.3176 g/cm³^[1]
Melting point	1,238 °C (2,260 °F; 1,511 K)^[1]
Solubility in water	insoluble
Solubility	soluble in HCl insoluble in ethanol, methanol, acetone
Band gap	1.424 eV (at 300 K)^[2]
Electron mobility	9000 cm²/(V·s) (at 300 K)^[3]
Magnetic susceptibility (χ)	-16.2×10⁻⁶ cgs^[4]
Thermal conductivity	0.56 W/(cm·K) (at 300 K)^[5]
Refractive index (n_D)	3.3^[4]
Structure^[5]
Crystal structure	Zinc blende
Space group	T²_d-F-43m
Lattice constant	a = 565.315 pm
Coordination geometry	Tetrahedral
Molecular shape	Linear
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H350, H360F, H372
Precautionary statements	P261, P273, P301+P310, P311, P501
NFPA 704 (fire diamond)	3 0 0
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Gallium nitride Gallium phosphide Gallium antimonide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references