Effects of Size and Oxidation on the Nonlinear Optical Response and Optical Limiting of Graphene Oxide Sheets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73602534" target="_blank" >RIV/61989592:15310/20:73602534 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/full/10.1021/acs.jpcc.0c03134" target="_blank" >https://pubs.acs.org/doi/full/10.1021/acs.jpcc.0c03134</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.0c03134" target="_blank" >10.1021/acs.jpcc.0c03134</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effects of Size and Oxidation on the Nonlinear Optical Response and Optical Limiting of Graphene Oxide Sheets

Popis výsledku v původním jazyce

In the present work we report on the effect of the size and the degree of oxidation on the third-order nonlinear optical response and the optical limiting action of water dispersed graphene oxide (GO) sheets, under 4 ns and 532 and 1064 nm laser excitation. The results show clearly that both the nonlinear optical (NLO) third-order susceptibility chi((3)) and the optical limiting (OL) threshold depend importantly on the size of the GOs, scaling linearly with the lateral size. In addition, it was found that the similar size but highly oxidized GO samples exhibited lower NLO response than the less oxidized ones, while their OL efficiency was found to be slightly affected by the degree of oxidation, increasing with the increase of the size of the GO sheets. The OL thresholds of the graphene oxide samples were found to be very low, comparable to some of the benchmark optical limiting materials. The observed size dependent NLO response of the GOs seems to be closely connected to the size of the conjugated areas of the graphenic sheets. The findings suggest a straightforward and efficient way for preparing graphene oxide sheets exhibiting custom-made nonlinear optical properties for specific applications in optoelectronics and photonics.

Název v anglickém jazyce

Effects of Size and Oxidation on the Nonlinear Optical Response and Optical Limiting of Graphene Oxide Sheets

Popis výsledku anglicky

In the present work we report on the effect of the size and the degree of oxidation on the third-order nonlinear optical response and the optical limiting action of water dispersed graphene oxide (GO) sheets, under 4 ns and 532 and 1064 nm laser excitation. The results show clearly that both the nonlinear optical (NLO) third-order susceptibility chi((3)) and the optical limiting (OL) threshold depend importantly on the size of the GOs, scaling linearly with the lateral size. In addition, it was found that the similar size but highly oxidized GO samples exhibited lower NLO response than the less oxidized ones, while their OL efficiency was found to be slightly affected by the degree of oxidation, increasing with the increase of the size of the GO sheets. The OL thresholds of the graphene oxide samples were found to be very low, comparable to some of the benchmark optical limiting materials. The observed size dependent NLO response of the GOs seems to be closely connected to the size of the conjugated areas of the graphenic sheets. The findings suggest a straightforward and efficient way for preparing graphene oxide sheets exhibiting custom-made nonlinear optical properties for specific applications in optoelectronics and photonics.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

124

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

11265-11273

Kód UT WoS článku

000537428000052

EID výsledku v databázi Scopus

2-s2.0-85087948778