Lead Selenide is a chemical compound made up of lead and selenium, with the formula PbSe. It is a semiconductor material that is often used in infrared detectors and thermoelectric devices due to its unique electrical properties. This compound appears as a dark, crystalline solid and is typically formed through chemical reactions involving lead and selenium. Lead Selenide is notable for its ability to absorb infrared light, making it valuable in applications such as night vision technology and various sensing devices.