Single crystalline InAsxSb1 − x films with cut-off wavelength of 7-8 μm grown on (1 0 0) InSb substrates by liquid phase epitaxy

► We grow single crystalline InAsSb on (1 0 0) InSb by LPE with three different compositions. ► No dissolution happened at the interface of the film and the substrate. ► Smallest FWHM of the (4 0 0) RC for this kind of material has been detected by HRXRD. ► A cut-off wavelength longer than 8 μm has been detected.