Arsenic triselenide
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| Molar mass | Template:Chem molar mass |
| Appearance | brown-black powder[1] or metallic gray crystals |
| Odor | odorless |
| Density | 4.75 g/cm3[1] |
| Melting point | Template:Chembox CalcTemperatures |
| Template:Longitem | Monoclinic, mP20 |
| Template:Longitem | P21/c, No. 14 |
| Template:Longitem | a = 0.43 nm, b = 0.994 nm, c = 1.29058 nm α = 90°, β = 109.927°, γ = 90°
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| Template:Longitem | Template:Ubl |
| Template:Longitem | antimony(III) selenide |
| Template:Longitem | arsenic(V) selenide |
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Arsenic triselenide is an inorganic chemical compound with the chemical formula Template:Chem2.
Amorphous arsenic triselenide is used as a chalcogenide glass for infrared optics. When purified, it transmits light with wavelengths between ca. 0.7 and 19 μm.[2]
In arsenic triselenide, arsenic is covalently bonded to selenium, where arsenic has a formal oxidation state of +3, and selenium −2.
Solution processed thin film Template:Chem2
Thin film selenide glasses have emerged as an important material for integrated photonics due to its high refractive index, mid-IR transparency and high non-linear optical indices. High-quality Template:Chem2 glass films can be deposited from spin coating method from ethylenediamine solutions.[3]
References
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