Gallium(II) selenide
| Names | |
|---|---|
| IUPAC name
Gallium selenide
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| Other names
Gallium monoselenide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.031.523 |
PubChem CID
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| Properties | |
| GaSe | |
| Molar mass | 148.69 g/mol |
| Appearance | brown solid |
| Density | 5.03 g/cm3 |
| Melting point | 960 °C (1,760 °F; 1,230 K) |
| Band gap | 2.1 eV (indirect) |
Refractive index (nD)
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2.6 |
| Structure | |
| hexagonal, hP8 | |
| P63/mmc, No. 194 | |
| Related compounds | |
Other anions
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Gallium(II) oxide, Gallium(II) sulfide, Gallium(II) telluride |
Other cations
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Zinc(II) selenide, Germanium monoselenide, Indium monoselenide |
Related compounds
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Gallium(III) selenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Gallium(II) selenide (GaSe) is a chemical compound. It has a hexagonal layer structure, similar to that of GaS. It is a photoconductor, a second harmonic generation crystal in nonlinear optics, and has been used as a far-infrared conversion material at 14–31 THz and above.