|Intrinsic, PV||MCT||Bolometers||Vanadium Oxide (V2O5)|
|InSb, InAsSb||Amorph Si|
|PbS, PbSe||Pyroelectric||Lithium Tantalite (LiTa)|
Many of these IR materials are based on compound semiconductors made of III-V elements such as indium, gallium, arsenic, antimony, or on the II-VI elements mercury, cadmium and telluride, or on the IV-VI elements lead, sulfur and selenide. They can be combined into binary compounds such as GaAs, InSb, PbS and PbSe or into ternaries such as InGaAs or HgCdTe.