Indium antimonide (InSb) is a compound made from the elements indium and antimony. It is a semiconductor material known for its high electron mobility, making it useful in various electronic applications, including infrared detectors and sensors. InSb is particularly effective in detecting infrared radiation, which is important in fields like astronomy and military technology. This material has a narrow bandgap, allowing it to operate effectively at room temperature. Due to its unique properties, indium antimonide is often used in photodetectors and thermophiles, contributing to advancements in optical communication and thermal imaging technologies.