2019年4月16日 · Raman spectra of MoTe 2 before and after laser processing are shown in Fig. 1c. The pristine 2H-MoTe 2 nanosheets exhibit two main Raman modes, including A′ 1 mode close to 174 cm −1 and E′...

2016年6月21日 · We use Raman Spectroscopy to probe the photon-electron-phonon coupling in MoTe 2, revealing hard to access Raman modes and mode splitting in detail. We also observe a peculiar phenomenon in...

2016年12月9日 · Here we present direct spectroscopic evidence for the inversion symmetry breaking in the low-temperature phase of MoTe 2 by systematic Raman experiments and first-principles calculations. We...

2016年4月13日 · We report on room-temperature Raman scattering measurements in few-layer crystals of exfoliated molybdenum ditelluride (MoTe 2) performed with the use of 632.8 nm (1.96 eV) laser light excitation.

2024年2月15日 · In this work, high-quality 2H–MoTe 2 crystals have been prepared through the chemical vapor transport (CVT) method, facilitating a full exploration of temperature-dependent Raman spectroscopy studies across a range spanning 80–680 K. The nonlinearity in the frequency shift and linewidth variation of the Raman peaks have been observed ...

2023年7月12日 · Optothermal Raman characterization has been a key method to identify the properties of layered materials, especially transition-metal dichalcogenides. This work investigates the thermal properties of suspended and supported MoTe 2 thin films using the optothermal Raman technique.

2014年3月21日 · Here we investigate the phonon properties of bulk and atomically thin α-MoTe 2 using Raman spectroscopy. The Raman spectrum of α-MoTe 2 shows a prominent peak of the in-plane E 1 2g mode, with its frequency upshifting with decreasing thickness down to the atomic scale, similar to other dichalcogenides.

2017年3月31日 · We combine polarization-resolved Raman spectroscopy with X-ray diffraction (XRD) and scanning transmission electron microscopy (STEM) to study MoWTe 2 alloys over the full compositional range x from 0 to 1.

2016年12月19日 · Chemical vapor deposition allows the preparation of few-layer films of MoTe 2 in three distinct structural phases depending on the growth quench temperature: 2H, 1T′, and 1T. We present experimental and computed Raman spectra for each of the phases and utilize transport measurements to explore the properties of the 1T MoTe 2 phase.

2024年10月5日 · Two-dimensional (2D) transition metal dichalcogenides (TMDs) have recently become attractive candidate substrates for surface-enhanced Raman spectroscopy (SERS) owing to their atomically flat surfaces and adjustable electronic properties. Herein, large-scale 2D 1T′- and 2H-MoTe 2 films were prepared using a chemical vapor deposition method.