2022年1月15日 · SnSe 2 is detected at a relatively high temperature and low laser power by in-situ temperature-dependent Raman technology on SnSe single crystal and verified by TEM technology. Raman technology is sensitive and easy enough to detect few mounts of materials on the surface of base materials.

2022年10月17日 · Here, we develop a physical vapor deposition approach to synthesize two-dimensional p-doped SnSe. The local phase segregation of SnSe 2 microdomains and accompanying interfacial charge transfer...

2023年2月14日 · In this work, we report the low-pressure PVD synthesis of high-quality 2D SnSe crystals with thinner thickness and larger lateral sizes. The as-synthesized SnSe displays high crystallinity and phase purity, as confirmed by Raman, X-ray photoemission spectroscopy (XPS), and scanning transmission electron ((micro-scopy)) (STEM).

2017年3月20日 · The SnSe NPs’ polarized Raman spectra exhibit an angular dependence that reveals the crystal’s anomalous anisotropic light–matter interaction. The Raman’s anisotropic response has a dependence upon the incident light polarization, photon, and phonon energy, arising from the anisotropic electron–photon and electron–phonon ...

2020年9月4日 · The lattice dynamics and high-temperature structural transition in SnS and SnSe are investigated via inelastic neutron scattering, high-resolution Raman spectroscopy and anharmonic first ...

2020年7月16日 · The evolution of the optical phonons in layered semiconductor alloys SnSe(1–x)Sx is studied as a function of the composition by using polarized Raman spectroscopy with six different...

In this work, outstanding angle-dependent Raman property of layered SnSe nano-plates is obtained via polarized Raman system and it is confirmed that the Raman polarization directions of two A g modes (130 cm −1 and 150 cm −1) are consistent with specific crystalline directions (zigzag direction or armchair direction) of SnSe flakes under ...

2020年3月1日 · In this work, we report the temperature-dependent and laser-power-dependent Raman spectroscopy of SnSe single crystal. We focused on the relationship between the material’s anharmonicity and the Raman spectroscopy including the peak position and its full width at half maxima (FWHM).

2018年7月10日 · Surface-enhanced Raman spectroscopy (SERS) is an important and powerful tool for the characterization of material structure. As a highly promising analytical tool, SERS plays an important role in ultrasensitive biomedical and chemical detection, which is very helpful for the potential application of chemical and biological sensing.

2020年4月10日 · We report Raman study of SnTe and SnSe as a function of pressure at room temperature along with first-principles density functional theory calculations. Under pressure, isostructural transition is observed in SnTe, as revealed by the anomalous softening of the strongest Raman mode up to 1.5 GPa, accompanied by an increase in the linewidth.