Infrared Detector - Types

Types

type Spectral range(μm) Wavenumber(cm-1)
Indium gallium arsenide(InGaAs) photodiode 0.7-2.6 14300-3800
Germanium photodiode 0.8-1.7 12500-5900
Lead sulfide (PbS) photoconductive 1-3.2 10000-3200
Lead selenide (PbSe) photoconductive 1.5-5.2 6700-1900
Indium antimonide (InSb) photoconductive 1-6.7 10000-1500
Indium arsenide (InAs) photovoltaic 1-3.8 10000-2600
Platinum silicide (PtSi) photovoltaic 1-5 10000-2000
Indium antimonide (InSb) photodiode 1-5.5 10000-1800
Mercury cadmium telluride (MCT, HgCdTe) photoconductive 0.8-25 12500-400
Mercury zinc telluride (MZT, HgZnTe) photoconductive
Lithium tantalate (LiTaO3) pyroelectric
triglycine sulfate (TGS and DTGS) pyroelectric

The range of pyroelectric detector is determined by the window materials used in their construction.

Vanadium pentoxide is frequently used as a detector material in uncooled microbolometer arrays.

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