Hg0.3Cd0.7Se

Hg₀.₃Cd₀.₇Se is a mercury-cadmium-selenide ternary alloy semiconductor belonging to the II-VI compound family, engineered to achieve a bandgap intermediate between CdSe and HgSe. This material is primarily used in infrared detection and thermal imaging applications, where its tunable bandgap allows engineers to target specific wavelength regions (typically mid-to-long-wave infrared) without requiring complex cooling systems in some configurations. The cadmium-rich composition offers a balance between the high carrier mobility of mercury-containing systems and the lattice stability of cadmium selenide, making it relevant for military, aerospace, and scientific instrumentation where sensitivity in the 3–14 μm range is required.