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Formula: Si
Form: Single Crystal
Material: Silicon
CAS Number: 7440-21-3
Commodity: Metals
Purity:
99.999%
Silicon single crystal is a pure, flawless form of silicon with an ordered crystalline structure. Its high purity and perfect atomic alignment lead to outstanding semiconductor properties like electron mobility and low electrical resistance. Silicon single crystals are indispensable in microelectronics applications like integrated circuits and transistors. As a leading supplier of advanced materials, Goodfellow offers high-quality silicon single crystals with precisely controlled dimensions and dopant concentrations.
Tolerances
Single Crystal
| Orientation | See Item | |
|---|---|---|
| Thickness | +2% / -1% | |
| Length | +2% / -1% |
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 14 |
| Crystal structure | Diamond |
| Electronic structure | Ne 3s² 3p² |
| Valences shown | 4 |
| Atomic weight( amu ) | 28.0855 |
| Thermal neutron absorption cross-section( Barns ) | 0.16 |
| Photo-electric work function( eV ) | 4.2 |
| Natural isotope distribution( Mass No./% ) | 30/ 3.10 |
| Natural isotope distribution( Mass No./% ) | 29/ 4.67 |
| Natural isotope distribution( Mass No./% ) | 28/ 92.23 |
| Atomic radius - Goldschmidt( nm ) | 0.117 |
| Ionisation potential( No./eV ) | 5/ 167 |
| Ionisation potential( No./eV ) | 1/ 8.15 |
| Ionisation potential( No./eV ) | 2/ 16.3 |
| Ionisation potential( No./eV ) | 3/ 33.5 |
| Ionisation potential( No./eV ) | 4/ 45.1 |
| Ionisation potential( No./eV ) | 6/ 205 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Mohs | 7 |
| Material condition | Polycrystalline |
| Poisson's ratio | 0.42 |
| Bulk modulus( GPa ) | 100 |
| Tensile modulus( GPa ) | 113 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 23 x 10¹⁰@20@20°C |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | -41.56 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 2355 |
| Density( gcm⁻³ ) | 2.34@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1410 |
| Latent heat of evaporation( J g⁻¹ ) | 13700 |
| Latent heat of fusion( J g⁻¹ ) | 1650 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 703@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 80-150@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 4.7-7.6@0-100°C |