نتایج جستجو برای: sns2
تعداد نتایج: 222 فیلتر نتایج به سال:
We selected k-meshes to ensure the energy convergence within 10 meV/atom. To be specific, 5×5×5 and 6×6×1 k-point grid were employed for primitive cells of SiO2 and every TMD, respectively. The gaussian smearing method with the smearing width of 0.05 eV was used for all calculations in our study. The monolayers of TMDs can have various polymorphs. In this study, we employed the phases experimen...
Sn-doped In2O3 nanowires have been grown on Si via the vapor-liquid-solid mechanism at 800 °C and then exposed to H2S between 300 to 600 °C. We observe the existence of cubic bixbyite In2O3 and hexagonal SnS2 after processing the Sn:In2O3 nanowires to H2S at 300 °C but also cubic bixbyite In2O3, which remains dominant, and the emergence of rhombohedral In2(SO4)3 at 400 °C. The resultant nanowir...
The ordered tin disulfide (SnS(2)) nanowire arrays were first fabricated by sulfurizing the Sn nanowires, which are embedded in the nanochannels of anodic aluminum oxide (AAO) template. SnS(2) nanowire arrays are highly ordered and highly dense. X-ray diffraction (XRD) and corresponding selected area electron diffraction (SAED) patterns demonstrate the SnS(2) nanowire is hexagonal polycrystalli...
Here, we report time-resolved broadband transient reflectivity measurements performed in a single crystal of SnS2. We made use time-domain Brillouin scattering and probe to measure the out-of-plane longitudinal sound velocity, υL=(2950±100)ms–1, this semiconducting two-dimensional metal dichalcogenide. Our study illustrates potential non-invasive all-optical pump–probe technique for elastic pro...
Polycrystalline SnS thin films were grown on glass substrates using a novel procedure involving a chemical reaction between the precursor species evaporated simultaneously. This is a relatively new material, which exhibits excellent properties to be used as absorbent layer in solar cells. X-ray diffraction (XRD) measurements indicate that the synthesized samples grow in several phases (SnS, SnS...
The fabrication of van der Waals heterostructures, artificial materials assembled by individual stacking of 2D layers, is among the most promising directions in 2D materials research. Until now, the most widespread approach to stack 2D layers relies on deterministic placement methods, which are cumbersome and tend to suffer from poor control over the lattice orientations and the presence of unw...
Tin sulfide is being widely investigated as an earth-abundant light harvesting material, but recorded efficiencies for SnS fall far below theoretical limits. We describe the synthesis and characterization of the single-crystal tin sulfides (SnS, SnS2, and Sn2S3) through chemical vapor transport, and combine electronic structure calculations with time-resolved microwave conductivity measurements...
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