Description
High-purity tellurium is an essential component in the manufacturing of cadmium telluride (CdTe) solar cells and thermoelectric devices. Tellurium is also used to make rewritable optical discs (CDs, DVDs and Blu-ray), and for the new generation of random access memory (RAM) known as PRAM.
Tellurium was discovered in 1782 by Austrian chemist Franz Joseph Muller von Reichenstein. Despite its metallic appearance, it is a semi-metal or metalloid, extracted primarily from residues produced by copper and lead refining.
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