Indium phosphide

Indium phosphide
Other names

Indium(III) phosphide
Identifiers
CAS number 22398-80-7 Y
ChemSpider 28914 Y
Jmol-3D images Image 1
Properties
Molecular formula InP
Molar mass 145.792 g/mol
Appearance black cubic crystals
Density 4.81 g/cm3, solid
Melting point

1062 °C (1335 K)
Solubility in water slightly soluble in acids[1]
Band gap 1.344 eV (300 K; direct)
Electron mobility 5400 cm2/(V·s) (300 K)
Thermal conductivity 0.68 W/(cm·K) (300 K)
Refractive index (nD) 3.1 (infrared);
3.55 (632.8 nm)[2]
Structure
Crystal structure Zinc blende
Coordination
geometry		 Tetrahedral
Thermochemistry
Std enthalpy of
formation ΔfHo298		 -88.7 kJ/mol
Standard molar
entropy So298		 59.8 J/(mol·K)
Specific heat capacity, C 45.4 J/(mol·K)[3]
Hazards
MSDS External MSDS
EU Index Not listed
Main hazards Toxic, hydrolysis to phosphine
Related compounds
Other anions Indium nitride
Indium arsenide
Indium antimonide
Other cations Aluminium phosphide
Gallium phosphide
Related compounds Indium gallium phosphide
Aluminium gallium indium phosphide
Gallium indium arsenide antimonide phosphide
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Indium phosphide (InP) is a binary semiconductor composed of indium and phosphorus. It has a face-centered cubic ("zincblende") crystal structure, identical to that of GaAs and most of the III-V semiconductors.

InP is used in high-power and high-frequency electronics because of its superior electron velocity with respect to the more common semiconductors silicon and gallium arsenide. It also has a direct bandgap, making it useful for optoelectronics devices like laser diodes. InP is also used as a substrate for epitaxial indium gallium arsenide based opto-electronic devices.

Indium phosphide also has one of the longest-lived optical phonons of any compound with the zincblende crystal structure.

References

  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–61, ISBN 0-8493-0594-2 
  2. ^ Sheng Chao, Tien; Lee, Chung Len; Lei, Tan Fu (1993), "The refractive index of InP and its oxide measured by multiple-angle incident ellipsometry", Journal of Materials Science Letters 12 (10): 721, doi:10.1007/BF00626698. 
  3. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 5–20, ISBN 0-8493-0594-2 

External links