Mercury Cadmium Telluride (HgCdTe) is a semiconductor material made from a combination of mercury, cadmium, and tellurium. It is known for its ability to detect infrared radiation, making it useful in various applications such as thermal imaging, night vision, and spectroscopy. The composition can be adjusted to tune its properties, allowing it to be tailored for specific wavelengths. This material is often used in infrared detectors and photovoltaic cells, where its sensitivity to infrared light is crucial. Due to its unique characteristics, HgCdTe plays a significant role in advancing technologies in fields like defense, astronomy, and medical imaging.