AI Article Synopsis
- - Tin sulfides come in various phases and structures because of the different oxidation states of tin (Sn), particularly in 2D forms that have unique electronic and optical properties.
- - This study focuses on selectively growing two specific types of tin sulfide crystals—hexagonal SnS2 and orthorhombic SnS—using a vapor-phase method on SiO2 substrates, producing large crystals.
- - The researchers characterize these tin sulfide crystals through different microscopy and spectroscopy techniques, and their findings are supported by theoretical calculations based on density functional theory.
Article Abstract
Tin sulfides can exist in a variety of phases and polytypes due to the different oxidation states of Sn. A subset of these phases and polytypes take the form of layered 2D structures that give rise to a wide host of electronic and optical properties. Hence, achieving control over the phase, polytype, and thickness of tin sulfides is necessary to utilize this wide range of properties exhibited by the compound. This study reports on phase-selective growth of both hexagonal tin (IV) sulfide SnS2 and orthorhombic tin (II) sulfide SnS crystals with diameters of over tens of microns on SiO2 substrates through atmospheric pressure vapor-phase method in a conventional horizontal quartz tube furnace with SnO2 and S powders as the source materials. Detailed characterization of each phase of tin sulfide crystals is performed using various microscopy and spectroscopy methods, and the results are corroborated by ab initio density functional theory calculations.
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| http://dx.doi.org/10.1002/smll.201600559 | DOI Listing |
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