HgCdTe (Mercury Cadmium Telluride), also known as MCT, is a semiconductor material that is highly sensitive to infrared radiation. HgCdTe photoconductive detector chips are designed to detect and measure the intensity of infrared light. These chips are commonly used in military and aerospace applications, such as surveillance, target acquisition, and missile guidance. They are also used in medical imaging, thermal imaging, and scientific research. MCT detectors are capable of operating at low temperatures, down to liquid nitrogen temperatures, in order to reduce thermal noise and improve their sensitivity.