CdMnTe detectors are now the most important detectors It work in room temp with out cooling and has good resolution Cadmium manganese telluride is a diluted magnetic semiconductor material which forms the basis for many important devices such as IR detectors Solar cells magnetic sensors optical isolators and visible and near IR lasers.For wide-gap DMS such as Cd1-xMnxTeCd1-xMnxSeect. crystallographic studies indicate that single phase regions –either zinc blende or wurtzite-exist over wide ranges of x all results to date suggest that in those regions of solid solution the band-gap is always direct.