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Open AccessArticle

Facile One-Step Synthesis and Enhanced Optical Nonlinearity of Graphene-γMnS

Institute of Micro/Nano Photonic Materials and Applications, School of Physics and Electronics, Henan University, Kaifeng 475004, China
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Nanomaterials 2019, 9(12), 1654; https://doi.org/10.3390/nano9121654
Received: 26 October 2019 / Revised: 18 November 2019 / Accepted: 18 November 2019 / Published: 21 November 2019
Graphene-γMnS were prepared by facile one-step hydrothermal method. Structures and properties of samples were explored by characterization, and nonlinear optical (NLO) enhancement of nanocomposites (NCs) was fully studied. Nanoparticles and NCs were tested at 532 nm by a Z-scan technique. With γMnS attached in G layers, NLO susceptibility of graphene-γMnS was greatly improved under single-pulse laser irradiation compared with G and γMnS. The nonlinearity enhanced was attributed to local field effect and charge transfer between γMnS and graphene layers. And NLO property enhancement was restricted by non-radiative defects in graphene-γMnS. Exploring the mechanism of nonlinearity enhancement was significant for fabrication of NLO devices. However, the optical nonlinearity decreased first and then increased with further increased addition of GO, because the dispersion of γMnS attached on graphene surface might make density of sp2 fragment and defects changed. Graphene-γMnS exhibited excellent and tunable NLO performance, illustrating that NCs materials have potential applications in NLO devices.
Keywords: graphene; graphene-γMnS; Z-scan; NLO property enhancement graphene; graphene-γMnS; Z-scan; NLO property enhancement
MDPI and ACS Style

Zhang, Z.; Li, P.; Li, P.; Gu, Y. Facile One-Step Synthesis and Enhanced Optical Nonlinearity of Graphene-γMnS. Nanomaterials 2019, 9, 1654.

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