Raman investigation of laser-induced structural defects of graphite oxide films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00495588" target="_blank" >RIV/61389005:_____/18:00495588 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/epjconf/201816704011" target="_blank" >http://dx.doi.org/10.1051/epjconf/201816704011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201816704011" target="_blank" >10.1051/epjconf/201816704011</a>

Result language

angličtina

Original language name

Raman investigation of laser-induced structural defects of graphite oxide films

Original language description

Since the beginning of intensive studies on graphene and graphitic materials, Raman spectroscopy has always been used as a characterisation technique. This is due to two main reasons: the non-destructive nature of this experimental technique and its ability to distinguish between the plethora of existing carbon materials. One of the most challenging research activities concerns the production of graphene microcircuits. To address this issue, a possible strategy is to directly reduce and pattern graphite oxide (GO) film by laser irradiation. The objective of this study is to evaluate the laser irradiation-induced structural changes on thin GO films by using Micro-Raman spectroscopy. We used as a source a Nd:YAG laser (1064 nm) and different laser fluences: 15 J/cm2, 7.5 J/cm2 and 5 J/cm2. We have analyzed the modifications of the main Raman contributions of these graphitic materials: the D band (defect induced band), the G band (band due to sp2 hybridized carbon atoms) and the 2D band (D band overtone). In particular, we found out that our figure of merit (FOM) parameters, i.e. the intensity ratio ID/IG (for the D band and G band) and I2D/IG (for the 2D band and G band), change with the laser fluences, revealing a different effect induced by the laser irradiation. The best results are found in the sample irradiated with 5 J/cm2, suggesting that higher fluences do not lead to better results.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

EPJ Web of Conferences

ISBN

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ISSN

2101-6275

e-ISSN

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Number of pages

5

Pages from-to

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Publisher name

EDP Sciences

Place of publication

Les Ulis

Event location

Messina

Event date

Jul 5, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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