Synthesis, Optical Properties of 0D Tin Nanoparticles and 2D Tin Disulfide
碩士 === 國立東華大學 === 物理學系 === 107 === The zero-dimensional (0D) tin nanoparticles (Sn) and two-dimensional (2D) tin disulfide (SnS2) nanomaterials were synthesized using hot-plate metal vapor deposition (HPMVD) technique. The surface morphology of the two materials was observed by field-emission scanni...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2019
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| Online Access: | http://ndltd.ncl.edu.tw/handle/qa9mv5 |
| Summary: | 碩士 === 國立東華大學 === 物理學系 === 107 === The zero-dimensional (0D) tin nanoparticles (Sn) and two-dimensional (2D) tin disulfide (SnS2) nanomaterials were synthesized using hot-plate metal vapor deposition (HPMVD) technique. The surface morphology of the two materials was observed by field-emission scanning electron microscopy (FESEM). The results show that the zero-dimensional (0D) nanoparticles of tin and two-dimensional (2D) of tin disulfide. The chemical and electronic composition is studied using energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The 2D SnS2¬ was occurred with tin sulfide (SnS). The analysis of X-ray diffractometry (XRD) patterns shows that the Sn nanoparticles consist of tetragonal crystal structure and SnS2 is of hexagonal crystals. Raman spectroscopy and photoluminescence (PL) spectroscopy were used to investigate the optical properties of Sn and SnS2. The optical bandgap of the 2D SnS2 found to be 2.84 eV with indirect type bandgap. At different temperatures, as compared with pure Sn, SnS2 show higher dependence on temperature due to anharmonic effect and thermal expansion. The exfoliation of the 2D SnS2 is achieved using a scotch tape. The exfoliation of SnS2 confirms the two-dimensional nature of the SnS2 layers bound by weak Van der Waals force. The absorption spectroscopy of the SnS2 shows that the transmittance is increased with reducing number of layers of SnS2 caused by the quantum confinement effect.
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