The new findings reported herein should pave the ways for the thickness‐tunable growth of atomically thin SnSe2 crystals, and their unique optical property explorations and applications in ...

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...

2021年3月1日 · The XPS analysis was employed to explore chemical states of elements in the 2D/2D SnSe2/graphene heterostructure, with the full-scale spectra displayed in Fig. S6. The high revolution Se 3d XPS peaks are located at 53.1, 54.0, and 55.1 eV ( Fig. 3 b), which are ascribed to the Se 3d5/2, Se 3d, and Se 3d3/2 phases of SnSe2, respectively.

2024年4月23日 · These discernible XRD patterns unequivocally confirmed the presence of a hexagonal phase in the MCs NFs, devoid of any impurity phases. XPS was utilized to explore the chemical state and composition of the MCs NFs. The XPS spectra for SnS 2 and SnSe 2 on Si substrates are shown in Figure 1b–d.

2020年7月14日 · By means of experiments and theory, the gas-sensing properties of tin diselenide (SnSe 2) were elucidated. We discover that, while the stoichiometric single crystal is chemically inert even in air, the nonstoichiometric sample assumes a subnanometric SnO 2 surface oxide layer once exposed to ambient atmosphere.

Atomic force microscopy (AFM), Raman, photoluminescence (PL) and X-ray Photoelec-tron Spectroscopy (XPS) characterization reveal that the as-synthesized few-layer SnSe2 (with a thickness of 1.34 nm) are of high quality with an indirect bandgap z1.74 eV, while subsequent variable temperature (77–298 K) Raman and PL measurements provide SnSe2 latt...

SnSe2/CNT photo-detector is studied under polychromatic white light illumination with varying power intensity under atmospheric conditions and in vacuum. The photo-detector shows excellent...

2018年7月10日 · The ultrathin SnSe2 nanoflakes show a strong surface-enhanced Raman spectroscopy (SERS) activity for Rhodamine 6G (R6G) molecules. Theoretical explanations for the enhancement principle based on the chemical enhancement mechanism and charge transfer diagram between R6G and SnSe2 are provided.

2024年2月21日 · X-ray photoelectron spectroscopy (XPS) analysis further determine the surface chemical state and electronic structure of SnSe 2 @CNFs. The survey spectrum in figure 4(a) confirms the existence of C, N, Sn and Se within the composite.

The SnSe samples have been characterized by XRD, SEM, XPS, TEM, laser flash, and BET, and the results show that the nanostructure and the presence of SnSe2 secondary phase enhance phonon ...