Lead telluride is a chemical compound composed of lead and tellurium, represented by the formula PbTe. It is a semiconductor material, meaning it can conduct electricity under certain conditions, making it useful in various electronic applications. This compound is often used in thermoelectric devices, which convert temperature differences into electrical energy. Due to its unique properties, PbTe is also explored in applications like infrared detectors and sensors, contributing to advancements in technology and energy efficiency.