Chalcogenide

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.^{[citation needed]}

An optical processing chip using a chalcogenide as a photodetector has been developed by The University of Sydney with potential to speed up links between optical fibre networks and computers.^[1]

Examples

• Cadmium telluride
• Indium sulfide
• Zinc telluride
• Sodium selenide

See also

• Phase-change memory
• Chalcogen
• negative resistance

External links

• Phase change memory-based 'moneta' system points to the future of computer storage ScienceBlog Jun 03, 2011
• Tiny Chip Demonstrates Big Memory in Cosmos Michael P. Kleiman for Air Force Research Laboratory, Space Vehicles Directorate (SpaceDaily) Jul 27, 2006
• Breakthrough switching speed with an all-optical chalcogenide glass chip: 640 Gbit/s demultiplexing Michael Galili, Jing Xu, Hans C. Mulvad, Leif K. Oxenløwe, Anders T. Clausen, Palle Jeppesen, Barry Luther-Davis, Steve Madden, Andrei Rode, Duk-Yong Choi, Mark Pelusi, Feng Luan, and Benjamin J. Eggleton (Optics Express, Vol. 17, Issue 4, pp. 2182–2187) February 2, 2009
• Maksym V. Kovalenko, Marcus Scheele, and Dmitri V. Talapin. "Colloidal Nanocrystals with Molecular Metal Chalcogenide Surface Ligands". Science 324(12June2009): 1417-1420
• Big Blue boffins hatch dirt-cheap solar cells The Register, 12 February 2010

1. ^ * Chip may speed up internet 100 times Deborah Smith for Sydney Morning Herald July 10, 2008