| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1494839 | Optical Materials | 2013 | 7 Pages |
For the first time temperature dependence of optical energy gap of antimony sulfoiodide (SbSI) nanowires has been determined. In ferroelectric phase (for 241 K < T < Tc = 292 K) 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 = 292 K < T < 344 K) 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 240 K the spontaneous polarization of the SbSI nanowires has the maximum value of about 0.08 C/m2.
► First time temperature dependence of optical energy gap of SbSI nanowires has been determined. ► Mechanisms of optical absorption in SbSI have been discussed. ► Spontaneous polarization influences energy gap of SbSI nanowires near the Curie point. ► Temperature dependence of spontaneous polarization of SbSI nanowires has been evaluated. ► Optical properties of SbSI nanowires have been compared with data of bulk single crystals.
