Indium phosphide
| Indium phosphide | |
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Other names
Indium(III) phosphide |
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| Identifiers | |
| CAS number | 22398-80-7  |
| PubChem | 31170 |
| ChemSpider | 28914 |
| Jmol-3D images | Image 1 |
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| 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, 1944 °F |
| 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 ΔfH |
-88.7 kJ/mol |
| Standard molar entropy S |
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 |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| 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.[citation needed]
[edit] References
- ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–61, ISBN 0-8493-0594-2
- ^ 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.
- ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 5–20, ISBN 0-8493-0594-2
[edit] External links
- Extensive site on the physical properties of indium phosphide (Ioffe institute)
- InP conference series at IEEE
- Indium Phosphide and Indium Gallium Arsenide Help Break 600 Gigahertz Speed Barrier (2006 news)
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