InAsSbP/InAs LEDs for the 3.3-5.5μm spectral range

Room-temperature LEDs, fabricated from LPE grown InAsSb(P)/InAs heterostructures, are characterised with respect to methane (3.3 µm), carbon dioxide (4.3 µm) and nitric oxide (5.3 µm) optical detection. Output power as high as 50 µW (I = 1 A, 128 µs) and FWHM as small as 0.6 µm have been obtained for the first reported InAsSb LED emitting at 5.5 µm