Selenium Foil

Selenium Foil provides notable photoconductive properties, chemical stability, and compatibility with semiconductor fabrication. Its flat, thin geometry makes it suitable for deposition substrates, optical filters, and photovoltaic device components. Industries such as electronics, renewable energy, and imaging use selenium foil in x-ray detectors, thin-film solar cells, and light-sensing devices. Specific applications include acting as a photoconductive layer in xerographic printing, serving as a key component in cadmium-selenium photovoltaic modules, and functioning as a filter material in spectroscopic instruments. In research, selenium foil supports studies on photoconductivity, semiconductor junctions, and advanced optical coatings. The combination of photonic responsiveness and machinable form makes it a valuable material for precision technology and research applications.

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Tolerance

Properties

Reference & Citations

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Tolerances

Foil

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