Stokes and anti-Stokes Raman spectra of the high-energy C-C stretching modes in graphene and diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-09-02 |
| Journal | physica status solidi (b) |
| Authors | Ado JĆ³rio, Mark Kasperczyk, Nick Clark, Elke Neu, Patrick Maletinsky |
| Institutions | Universidade Federal de Minas Gerais, Henry Royce Institute |
| Citations | 19 |
Abstract
Section titled āAbstractāThe Stokes and the anti-Stokes Raman spectra from the high energy carbon-carbon stretching modes in graphene and diamond are studied, with a focus on their intensity dependence on the excitation laser power. For diamond, the experiment was performed on a 50 Ī¼m slice of chemical vapour deposition grown single crystal using a 785 nm laser, in both the continuous wave (CW) and pulsed mode-locked (MLā130 fs pulses) excitation regimes. For graphene, the experiments were performed on suspended samples, including single layer, bilayer with AB-staking, twisted bi-layer and a sample with 4-6 layers, using Ī» = 532 and 633 nm CW lasers. The Stokes and anti-Stokes intensities vary largely from sample to sample, and the anti-Stokes/Stokes intensity ratio shows different excitation laser power behaviours. These differences can be explained on the basis of laser heating or correlated Stokes-anti-Stokes scattering phenomena.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2011 - Raman Spectroscopy in Graphene Related Systems [Crossref]