Chalcogenide is a chemical compound containing one or more chalcogen elements (oxygen, sulfur, selenium, tellurium, or polonium) bonded to another element, typically a metalloid or metal. In materials science, chalcogenides are notable for their semiconducting and optical properties, enabling applications in phase-change memory and infrared detectors. The term derives from the chalcogen group in the periodic table and is used mainly in technical literature and research contexts.
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