Bismuth selenide
| Names | |
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IUPAC name
selenoxobismuth, selanylidenebismuth
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| Identifiers | |
12068-69-8 
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| 3D model (Jmol) | Interactive image |
| ECHA InfoCard | 100.031.901 |
| PubChem | 6379269 |
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| Properties | |
| Bi2Se3 | |
| Molar mass | 654.8 g/mol |
| Appearance | Dull grey |
| Density | 6.82 g/cm^3 |
| Melting point | 710 °C (1,310 °F; 983 K) |
| insoluble | |
| Solubility | insoluble in organic solvents soluble in strong acids |
| Hazards | |
| Main hazards | Toxic |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Bismuth selenide (Bi2Se3) is a gray powder that is a compound of bismuth and selenium also known as bismuth(III) selenide. It is a semiconductor and a thermoelectric material. While perfect stoichiometric bismuth selenide should be a semiconductor (with a gap of 0.3 eV) naturally occurring selenium vacancies act as electron donors and it often acts as a semimetal.Topologically protected surface states have been observed in Bismuth selenide which is the subject of ongoing scientific research.
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