Antimony triselenide
Appearance
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Names | |
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Other names
antimonselite
selenoxyantimony | |
Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.013.870 |
PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
Sb2Se3 | |
Molar mass | 480.4 g/mol |
Appearance | black crystals |
Density | 5.81 g/cm3, solid |
Melting point | 611 °C (1,132 °F; 884 K) |
Structure | |
Orthorhombic, oP20, SpaceGroup = Pnma, No. 62 | |
Hazards | |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 0.5 mg/m3 (as Sb)[1] |
REL (Recommended)
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TWA 0.5 mg/m3 (as Sb)[1] |
Related compounds | |
Other anions
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antimony(III) oxide, antimony(III) sulfide, antimony(III) telluride |
Other cations
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arsenic(III) selenide, bismuth(III) selenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Antimony triselenide is the chemical compound with the formula Sb2Se3. The material exists as the sulfosalt mineral antimonselite, which crystallizes in an orthorhombic space group.[2] In this compound, antimony has the oxidation state +3 and selenium −2, but in fact the bonding in this compound is highly covalent as reflected by the black color and semiconducting properties of this and related materials.[3]
It may be formed by the reaction of antimony with selenium.
Applications
Sb2Se3 is now actively explored for thin film solar cells and have achieved 6.5% certified efficiency.
References
- ^ a b NIOSH Pocket Guide to Chemical Hazards. "#0036". National Institute for Occupational Safety and Health (NIOSH).
- ^ Jambor, J. L.; Grew, E. S."New Mineral Names" American Mineralogist, Volume 79, pages 387-391, 1994.
- ^ Caracas, R.; Gonze, X. "First-principles study of the electronic properties of A2B3 minerals,, with A=Bi,Sb and B=S,Se, Note: Hypothetical sulphosalt structure derived from density functional theory"" Physics and Chemistry of Minerals 2005, volume 32 p.295-300.