Mercury telluride
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| __ Hg 2+ __ Te 2− | ||||||||||||||||
| General | ||||||||||||||||
| Surname | Mercury telluride | |||||||||||||||
| other names |
Mercury (II) telluride |
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| Ratio formula | HgTe | |||||||||||||||
| Brief description |
black crystals |
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| properties | ||||||||||||||||
| Molar mass | 329.18 g mol −1 | |||||||||||||||
| Physical state |
firmly |
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| density |
8.12 g cm −3 (20 ° C) |
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| Melting point |
673 ° C |
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| safety instructions | ||||||||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||||||||
Mercury telluride (HgTe) is a crystalline compound from the group of Telluride consisting of mercury and tellurium having a (cubic) sphalerite - crystal structure is formed. The space group is F 4 3 m (No. 216) . In its crystalline form it is a direct semiconductor and one of the II-VI compound semiconductors .
Occurrence
In nature, mercury telluride is a rare mineral coloradoite .
properties
The naturally weak p-conductive semiconductor material mercury telluride can be converted into an n-conductive semiconductor by doping it with elements such as bromine , aluminum , gallium or indium ; when doped with zinc or copper , the p-conductivity can be increased.
Mercury telluride can be produced by the metal-organic gas phase epitaxy . Applications are in the field of solid state physics as a topological insulator .
Related links
- Cadmium Telluride (CdTe)
- Mercury (II) cadmium (II) telluride ((Hg, Cd) Te)
- Zinc telluride (ZnTe)
- Cadmium Selenide (CdSe)
- Cadmium zinc telluride ((Cd, Zn) Te)
literature
- Ed. J. Brice, P. Capper: Properties of mercury cadmium telluride . EMIS datareview, INSPEC, IEE, London 1987.
Individual evidence
- ↑ a b c d e data sheet mercury telluride at AlfaAesar, accessed on July 11, 2011 ( PDF )(JavaScript required) .
- ↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling falls under the group entry inorganic compounds of mercury with the exception of mercuric sulphide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .