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This article aims to explore the preparation method of the semiconductor nanomaterials antimony sulfide, study its micro-structure, growth mechanism and optical properties. Sb 2 S 3 is an important class of highly anisotropic semiconductor thermoelectric material has a photoconductive target of the television camera, the thermoelectric device and an electronic apparatus, as well as infrared spectroscopy and many other fields has been widely used. In this study, the hydrothermal synthesis of rectangular columnar Sb 2 S 3 nanorods; using surfactant-assisted reflux method synthesized Sb 2 the S 3 nanorods, nano-flowers and microwave radiation thermal decomposition of single-source precursor synthesized antimony sulfide nano-flowers, and its microscopic structure, formed by the reaction mechanism and optical properties are discussed. The main contents are as follows: as reactants to SbCl3 and sulfur powder, sodium borohydride (NaBH4) as a reducing agent, and ethylene glycol (EG) as the auxiliary solvent, hydrothermal method was successfully synthesized quadrangular prism of Sb of 2 < / sub> S 3 nanorods. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), the selected area electron diffraction (SAED) and ultraviolet-visible spectroscopy (UV-Vis), the structure of the sample, composition, morphology and optical properties were characterized. The results showed that 180 ° C water hot for 12 h can be obtained crystalline morphology regular rectangular columnar orthorhombic Sb 2 S 3 single crystal nanorods , the rod cross-sectional view of a rectangular, its width 75 2 15 nm, a thickness of about 50 1 10 nm, the length of 2 5 um, and grown along the [001] direction. Is calculated, the unit cell parameters a = 1.126 nm, b = 1.128 nm and c = 0.382 nm. UV-Vis analysis showed that the SB 2 S 3 nano-rods for the semiconductor material, the band gap energy of 1.56 eV, the value is close to the best photoelectric conversion energy, and thus Sb < sub> 2 S 3 nanorods can be used in areas such as solar energy, photovoltaic conversion. The possible growth mechanism of the nanorods was discussed. The SbCl3 with thiourea as reactants, PEG 400, OP-10 as a surfactant, was prepared by the reflux method Sb 2 S 3 nanorods Nanoflowers,. X-ray diffraction (XRD) showed that the resulting product the orthorhombic system structure, the cell parameters are a = 1.124 nm, b = 1.134 nm, c = 0.382 nm. The scanning electron microscope (SEM) and transmission electron microscopy (TEM) studies have shown the Sb 2 S 3 Nanoflower diameter of approximately 9 1 0, it is by thickness of 0.05 0 .2 um, width 0.8 2 .2 m, length up to 2.5 3 μm nano-leaf form; stick antimony sulfide The average diameter of 45 3 60 nm, about 0.7 4 uM. UV-Vis analysis showed that the the Sb 2 S 3 nano-bandgap energy of 1.52 eV, applicable in the field of photoelectric conversion. Also explore the possible growth mechanism of nano-materials, and discusses a variety of reaction conditions such as reaction time, reaction temperature and surfactant Sb 2 S 3 nanorods formed Morphology of. Sb (S 2 CNEt 2 ) 3 is a single-source precursor by microwave radiation, ethylene glycol as the solvent, the successful synthesis of a three-dimensional of Sb the 2 S 3 cauliflower-like superstructure. XRD studies have shown that SB 2 S 3 nano-structure is orthorhombic, calculated cell parameters a = 1.141 nm, b = 1.131 nm, c = 0.3807 nm. SEM and TEM studies have shown that each cauliflower flower-like Sb 2 S 3 nanostructures launch shape assembled by nanorods from the center, the diameter of the rod approximately 20 3 50 nm, about 5 1 2 uM. The corresponding electron diffraction (ED) show that the composition of cauliflower-like nanorods crystal structure. Further experimental results show that the microwave radiation and surfactant PEG400 the cauliflower shaped Sb 2 S 3 nano flower superstructure formed a very important role. UV-visible (UV-Vis) analysis showed that the the Sb 2 S 3 nano material bandgap energy of 1.90 eV, greater than reported in the literature before. In addition, we also discussed the possible formation mechanism for cauliflower-like Sb 2 S 3 nano spend superstructure.
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