EventsThe 2nd International Online Conference on Nanomaterials
Event submissions
Published
with-doi10.3390/IOCN2020-07978
This submission belongs to the session I. Poster of the event The 2nd International Online Conference on Nanomaterials
Published date
12 Nov, 2020
Citation
Grazia Giuseppina Politano, Marco Castriota, Maria Penelope De Santo, Mario Michele Pipita, Giovanni Desiderio, Carlo Vena, Carlo Versace, Variable angle spectroscopic ellipsometry characterization of spin-coated MoS₂ films , in Proceedings of The 2nd International Online Conference on Nanomaterials, 15 November–30 November 2020, MDPI: Basel, Switzerland, doi: 10.3390/IOCN2020-07978
Share
Email
Facebook
Twitter
LinkedIn

Variable angle spectroscopic ellipsometry characterization of spin-coated MoS2 films

Grazia Giuseppina Politano 1
Marco Castriota 2
Maria Penelope De Santo 2
Mario Michele Pipita 3
Giovanni Desiderio 2
Carlo Vena 2
Carlo Versace 2
1. Dipartimento di Fisica, Università della Calabria 87036 Rende CS, Italy, Italy
2. Dipartimento di Fisica, Università della Calabria 87036 Rende CS, Italy
3. Notredame s.r.l., c/o Dipartimento di Fisica, Università della Calabria, Italy
Abstract

In the field of Transition Metal Dichalcogenides (TMDCs), molybdenum disulfide (MoS2) has attracted an outstanding interest due to several applications. MoS2 has potentialities not yet fully realized in solution-based applications. However, the lack of knowledge of the optical properties of MoS2, especially in the infrared range, has significantly limited his use in many exciting photonic fields. In this work, the broadband optical properties of MoS2 films deposited by spin-coating onto Si/SiO2 substrates were studied by means of Variable Angle Spectroscopic Ellipsometry (VASE).

The morphological and the structural properties of the samples were investigated by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and Micro-Raman Spectroscopy.

Micro-Raman spectroscopy measurements reveal the presence of 2H-MoS2 and 1T-MoS2 phases. The optical properties of the films show a mid-gap state at 0.6 eV, not reported in an ellipsometry work before, induced by defects in the MoS2 samples.

Keywords
ellipsometry
micro-Raman spectroscopy
molybdenum disulfide
optical properties
Manuscript
2ndinternationalonlineconferenceonnanomaterials.pdf
Synthesis of iridium and palladium nanoclusters for biomedical applications
Variable angle spectroscopic ellipsometry characterization of reduced graphene oxide stabilized with poly(sodium 4-styrenesulfonate)