A chalcogenide is a chemical compound consisting of at least one chalcogen ion and at least one more electropositive element. Although all group 16 elements of the periodic table are defined as chalcogens, the term is more commonly reserved for sulfides, selenides, and tellurides, rather than oxides.

Photoconductive chalcogenide glasses are used in xerography and television.

An optical processing chip made from chalcogenide has been developed by the university of Sydney with potential to speed up links between optical fibre networks and computers.

See also

• Phase-change memory

External links

• Tiny Chip Demonstrates Big Memory in Cosmos Michael P. Kleiman for Air Force Research Laboratory, Space Vehicles Directorate (SpaceDaily) Jul 27, 2006
• Chip may speed up internet 100 times Deborah Smith for Sydney Morning Herald July 10, 2008

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