Title
Laser power influence on Raman spectra of multilayer graphene, multilayer graphene oxide and reduced multilayer graphene oxide
Date Issued
21 December 2018
Access level
open access
Resource Type
conference paper
Author(s)
Ferreira Henrique
POMA G.
Acosta D.
Barzola-Quiquia J.
Barreto L.
Champi A.
Publisher(s)
Institute of Physics Publishing
Abstract
In this work, the influence of laser power on Raman spectra on different carbon based materials was studied: multilayer graphene (MLG), multilayer graphene oxide (MLGO) and reduced multilayer graphene oxide (rMLGO). The presence of oxygen and hydrogen was verified by means of Fourier-transform Infrared Spectroscopy, indicating that our oxidation and reduction process was success in our multilayers graphene. Through the position and width of the band G, we discuss the effects of the incorporation of oxygen by the graphene matrix in terms of thermal expansion and doping effects. The ID/IG ratio was used to determine the presence of defects and showed a similar behavior for MLGO and rMLGO demonstrating a feature of partial reduction and reduction effects caused by the power supplied by laser.
Volume
1143
Issue
1
Language
English
OCDE Knowledge area
Física atómica, molecular y química
Subjects
Scopus EID
2-s2.0-85059475568
Source
Journal of Physics: Conference Series
ISSN of the container
17426588
Conference
16th Meeting of Physics Lima 2 August 2017 through 4 August 2017
Sponsor(s)
The authors are thankful to the projects 138-FINCyT-IA-2013 (Peru) and PLAF/SBF (Brazil) for the financial support; also to the Nacional de Grafite Ltd from MG-Brazil for providing the graphite flakes to obtain the multilayer graphene; and to the UFABC Multiuser Central Facilities for letting us use the Raman spectroscope. We also thank and appreciate the financial support of UNAM-DGAPA IN 102816 project and would like to thank CAPES for the granted scholarship.
Sources of information:
Directorio de Producción Científica
Scopus