Раманiвська спектроскопiя графено-подiбних наночастинок дисульфiдiв молiбдена i вольфрама

• Main Authors: Naumenko, A., Kulikov, L., Konig, N.
• Format: Article
• Language: English
• Published: Publishing house "Academperiodika" 2019
• Subjects: MoS2; WS2 layered materials; graphene-like materials; Raman spectroscopy; vibrational-electronic interaction; -
• Online Access: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019080

The Raman spectra obtained in the case of graphene-like 2H-MoS2 and 2H-WS2 nanoparticles and depending on their average sizes in the [013] and [110] crystallographic directions are reported. It is established that the Raman spectra of graphene-like 2H-MoS2 nanoparticles and micron particles are closely related. Similarities of the Raman spectra point to the homogeneity of graphene-like 2H-MoS2 nanoparticles. The small shifts and the Raman spectrum line widening, for graphene-like 2H-MoS2 and 2H-WS2 nanoparticles, which are caused by the influence of the sizes of nanoparticles and their anisotropy, have been observed. The dependence of Raman spectra of graphene-like 2H-MoS2 nanoparticles on the their size in the crystallographic direction [110] is first shown, i.e. the positions of bands in the spectrum depend not only on the number of nanolayers S-Mo-S, but also on the size in the [110] direction.