Indium arsenide

Indium arsenide
Names
IUPAC name
Indium(III) arsenide
Other names
Indium monoarsenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.742 Edit this at Wikidata
UNII
  • InChI=1S/As.In checkY
    Key: RPQDHPTXJYYUPQ-UHFFFAOYSA-N checkY
  • InChI=1/As.In/rAsIn/c1-2
    Key: RPQDHPTXJYYUPQ-FVESRWMKAB
  • [In+3].[As-3]
  • [In]#[As]
Properties
InAs
Molar mass 189.740 g/mol
Density 5.67 g/cm3[1]
Melting point 942 °C (1,728 °F; 1,215 K)942[1]
Band gap 0.354 eV (300 K)
Electron mobility 40000 cm2/(V*s)
Thermal conductivity 0.27 W/(cm*K) (300 K)
4[2]
Structure
Zinc blende
a = 6.0583 Å
Thermochemistry[3]
47.8 J·mol−1·K−1
75.7 J·mol−1·K−1
-58.6 kJ·mol−1
-53.6 kJ·mol−1
Hazards
GHS labelling:
GHS06: ToxicGHS08: Health hazard[4]
Danger[4]
H301, H331[4]
P261, P301+P310, P304+P340, P311, P405, P501[4]
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
4
0
0
Safety data sheet (SDS) External SDS
Related compounds
Other anions
 Indium nitride
Indium phosphide
Indium antimonide
Other cations
 Gallium arsenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Indium arsenide, InAs, or indium monoarsenide, is a narrow-bandgap semiconductor composed of indium and arsenic. It has the appearance of grey cubic crystals with a melting point of 942 °C.[5]

Indium arsenide is similar in properties to gallium arsenide and is a direct bandgap material, with a bandgap of 0.35 eV at room temperature.

Indium arsenide is used for the construction of infrared detectors, for the wavelength range of 1.0–3.8 μm. The detectors are usually photovoltaic photodiodes. Cryogenically cooled detectors have lower noise, but InAs detectors can be used in higher-power applications at room temperature as well. Indium arsenide is also used for making diode lasers.

InAs is well known for its high electron mobility and narrow energy bandgap. It is widely used as a terahertz radiation source as it is a strong photo-Dember emitter.

Quantum dots can be formed in a monolayer of indium arsenide on indium phosphide or gallium arsenide. The mismatches of lattice constants of the materials create tensions in the surface layer, which in turn leads to the formation of the quantum dots.[6] Quantum dots can also be formed in indium gallium arsenide, as indium arsenide dots sitting in the gallium arsenide matrix.

References

  1. ^ a b Haynes, p. 4.66
  2. ^ Haynes, pp. 12.157
  3. ^ Haynes, p. 5.22
  4. ^ a b c d "Indium Arsenide". American Elements. Retrieved October 12, 2018.
  5. ^ "Thermal properties of Indium Arsenide (InAs)". Retrieved 2011-11-22.
  6. ^ "oe magazine - eye on technology". Archived from the original on 2006-10-18. Retrieved 2011-11-22.

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