Abstract
For the first time temperature dependence of optical energy gap of antimony sulfoiodide (SbSI) nanowires has been determined. In ferroelectric phase (for 241K<T<Tc=292K) the evaluated indirect forbidden optical energy gap has been fitted by EgfI(T)=[2.195(3)−10.8(1)×10−4T]eV. In paraelectric phase (Tc=292K<T<344K) the energy gap has been described by EgfI(T)=[2.152(4)−9.3(1)×10−4T]eV. It has been estimated that at the temperature of 240K the spontaneous polarization of the SbSI nanowires has the maximum value of about 0.08C/m2.
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