Particle Detectors: (4.16) Infrared Detector: Typica detection-element materials use in detector include: (1) Material Used: Indium gallium arsenide (InGaAs), Detector Type: photodiode, Spectral Range (μm): 0. 7–2. 6, Wavenumber (cm-1): 14300–3800; (2) Material Used: Germanium, Detector Type: photodiode, Spectral Range (μm): 0. 8–1. 7, Wavenumber (cm-1): 12500–5900; (3) Material Used: Lead sulfide (PbS), Detector Type: photoconductive, Spectral Range (μm): 1–3. 2, Wavenumber (cm-1): 10000–3200; (4) Material Used: Lead selenide (PbSe), Detector Type: photoconductive, Spectral Range (μm): 1. 5–5. 2, Wavenumber (cm-1): 6700–1900; (5) Material Used: Indium antimonide (InSb), Detector Type: photoconductive, Spectral Range (μm): 1–6. 7, Wavenumber (cm-1): 10000–1500; (6) Material Used: Indium arsenide (InAs), Detector Type: photovoltaic, Spectral Range (μm): 1–3. 8, Wavenumber (cm-1): 10000–2600; (7) Material Used: Platinum silicide (PtSi), Detector Type: photovoltaic, Spectral Range (μm): 1–5, Wavenumber (cm-1): 10000–2000; (8) Material Used: Indium antimonide (InSb), Detector Type: photovoltaic, Spectral Range (μm): 1–5. 5, Wavenumber (cm-1): 10000–1800; (9) Material Used: Mercury cadmium telluride (MCT, HgCdTe), Detector Type: photoconductive, Spectral Range (μm): 0. 8–25, Wavenumber (cm-1): 12500–400; (10) Material Used: Mercury zinc telluride (MZT, HgZnTe), Detector Type: photoconductive, Spectral Range (μm): No repot, Wavenumber (cm-1): No repot; (11) Material Used: Lithium tantalate (LiTaO3), Detector Type: pyroelectric, Spectral Range (μm): No repot, Wavenumber (cm-1): No repot; (12) Material Used: Triglycine sulfate (TGS and DTGS), Detector Type: pyroelectric, Spectral Range (μm): No repot, Wavenumber (cm-1): No repot. 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