Zinc selenide
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Zinc selenide is the inorganic compound with the formula ZnSe. It is a lemon-yellow solid although most samples have a duller color due to the effects of oxidation. It is an intrinsic semiconductor with a band gap of about 2.70 eV at 25 °C (77 °F), equivalent to a wavelength of 459 nm. ZnSe occurs as the rare mineral stilleite, named after Hans Stille.
Quick Facts Names, Identifiers ...
Names | |
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Other names
Zinc selenide Stilleite | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.013.873 |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
ZnSe | |
Molar mass | 144.35 g/mol |
Appearance | light yellow solid |
Density | 5.27 g/cm3 |
Melting point | 1,525 °C (2,777 °F) |
negligible | |
Band gap | 2.82 eV (10 K) |
Refractive index (nD) |
2.67 (550 nm) 2.40 (10.6 μm) |
Structure | |
Zincblende (cubic) | |
a = 566.8 pm | |
Tetrahedral (Zn2+) Tetrahedral (Se2−) | |
Thermochemistry | |
Std enthalpy of formation (ΔfH⦵298) |
−177.6 kJ/mol |
Hazards | |
GHS labelling: | |
Danger | |
H301, H331, H373, H410 | |
P260, P261, P264, P270, P271, P273, P301+P310, P304+P340, P311, P314, P321, P330, P391, P403+P233, P405, P501 | |
Related compounds | |
Other anions |
Zinc oxide Zinc sulfide Zinc telluride |
Other cations |
Cadmium selenide Mercury 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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