Počet záznamů: 1
Raman investigation of laser-induced structural defects of graphite oxide films
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SYSNO ASEP 0495588 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Raman investigation of laser-induced structural defects of graphite oxide films Tvůrce(i) Romano, V. (IT)
Torrisi, L. (IT)
Cutroneo, Mariapompea (UJF-V) ORCID, RID, SAI
Havránek, Vladimír (UJF-V) RID, SAI, ORCID
D'Angelo, G. (IT)Celkový počet autorů 5 Číslo článku 04011 Zdroj.dok. EPJ Web of Conferences, PPLA 2017, 167. - Les Ulis : EDP Sciences, 2018 - ISSN 2101-6275 Poč.str. 5 s. Forma vydání Tištěná - P Akce 8th International Conference on Plasma Physics by Laser and Applications (PPLA 2017) Datum konání 05.07.2017 - 07.07.2017 Místo konání Messina Země IT - Itálie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova graphene ; Raman spectroscopy ; graphite oxide film Vědní obor RIV BG - Jaderná, atomová a mol. fyzika, urychlovače Obor OECD Nuclear physics CEP GA16-05167S GA ČR - Grantová agentura ČR LM2015056 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UJF-V - RVO:61389005 EID SCOPUS 85040979636 DOI 10.1051/epjconf/201816704011 Anotace 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. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2019
Počet záznamů: 1