Optical properties of multilayer films of nanocomposites based on WS2 nanotubes decorated with gold nanoparticles

2nd International School and Conference Saint-Petersburg OPEN on Optoelectronics, Photonics, Engineering and Nanostructures

Polyakov, A.Y.^1 ; Nesterov, A.V.^1 ; Goldt, A.E.^1,2 ; Zubyuk, V.^3 ; Dolgova, T.^3 ; Yadgarov, L.^4 ; Visic, B.^4 ; Fedyanin, A.A.^3 ; Tenne, R.^4 ; Goodilin, E.A.^1,2

Department of Materials Science, Lomonosov MSU, Moscow, Russia^1

Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, Russia^2

Faculty of Physics, Lomonosov Moscow State University, Moscow

119991, Russia^3

Department of Materials and Interfaces, Weizmann Institute, Rehovot, Israel^4

关键词: Excitonic transition;    Film morphology;    High anisotropy;    Mosaic structure;    Semiconducting surfaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/643/1/012046/pdf
DOI  :  10.1088/1742-6596/643/1/012046

来源: IOP

【 摘 要 】

Multilayer films of WS2nanotubes decorated with gold nanoparticles are prepared for the first time using nanocomposite assemblage on the water-heptane interface and film transition onto optically transparent or semiconducting surfaces. The film morphology resembles a mosaic structure of 10-25 square micron areas with in-plane textured nanotubes. Optical properties demonstrate several features around 490, 545, and 675 nm connected either with excitonic transitions or scattering guided by high anisotropy of the nanotubes and their texturing peculiarities in the films.