Lead telluride

Lead telluride, also known as lead(II) telluride, is a chemical compound. Its chemical formula is PbTe. It contains lead and telluride ions. The lead is in the +2 oxidation state.
Properties.
Lead telluride is a gray crystalline solid. It reacts with strong acids to make toxic hydrogen telluride and toxic lead salts. 
Preparation.
It may be made by melting lead and tellurium together.
Uses.
It is used as a semiconductor and an infrared detector.