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Formula: Se
Form: Foil/Film/Sheet
Material: Selenium
CAS Number: 7782-49-2
Commodity: Metals
Purity: 99.95%
Thickness: 3mm
As part of our extensive selection of foils and foils, Selenium Foil is a thin foil of pure selenium available in a range of sizes and thicknesses. Selenium has unique photoelectric and semiconductor properties. This red crystalline metalloid is valued for applications in photocells and solar cells, as well as rectifiers and xerography processes. Our choice of Selenium Foil products enable researchers and engineers to find the ideal material for their specific application requirements.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Foil/Film/Sheet
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%

Material Properties for Metals

Atomic Properties
Element Value
Atomic number 34
Crystal structure Hexagonal
Electronic structure Ar 3d¹⁰ 4s² 4p⁴
Valences shown -2,4,6
Atomic weight( amu ) 78.96
Thermal neutron absorption cross-section( Barns ) 12.2
Photo-electric work function( eV ) 5.9
Natural isotope distribution( Mass No./% ) 76/ 9.0
Natural isotope distribution( Mass No./% ) 82/ 9.2
Natural isotope distribution( Mass No./% ) 74/ 0.9
Natural isotope distribution( Mass No./% ) 80/ 49.8
Natural isotope distribution( Mass No./% ) 77/ 7.6
Natural isotope distribution( Mass No./% ) 78/ 23.5
Atomic radius - Goldschmidt( nm ) 0.116
Ionisation potential( No./eV ) 4/ 42.9
Ionisation potential( No./eV ) 6/ 81.7
Ionisation potential( No./eV ) 5/ 68.3
Ionisation potential( No./eV ) 1/ 9.75
Ionisation potential( No./eV ) 3/ 30.8
Ionisation potential( No./eV ) 2/ 21.2
Mechanical Properties
Element Value
Hardness - Mohs 2
Material condition Polycrystalline
Poisson's ratio 0.447
Bulk modulus( GPa ) 8.3
Tensile modulus( GPa ) 58
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 12@20@20°C
Physical Properties
Element Value
Boiling point( C ) 685
Density( gcm⁻³ ) 4.79@20°C
Thermal Properties
Element Value
Melting point( C ) 217
Latent heat of evaporation( J g⁻¹ ) 333
Latent heat of fusion( J g⁻¹ ) 69
Specific heat( J K⁻¹ kg⁻¹ ) 321@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.5@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 37@0-100°C

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