Abstract
Graphene/MoS2 (G/MoS2) composites were synthesized for the first time by a hydrothermal method, and then were dispersed in methyl methacrylate (MMA) to fabricate organic glass by a casting method. Here, the poly(methylmethacrylate) (PMMA) host can be obtained by the polymerization of MMA. The nonlinear absorption (NLA) properties of the G/MoS2/PMMA organic glasses were investigated by using an open-aperture Z-scan technique. The experimental results showed that the G/MoS2/PMMA organic glasses (the NLA coefficient β, was up to 2110cm/GW) exhibited enhanced reverse saturable absorption (RSA) properties compared to G/PMMA (β=242cm/GW) and MoS2/PMMA (β=365cm/GW) organic glasses. The enhanced mechanism of RSA was analyzed in terms of the energy-level diagram of graphene and MoS2. The G/MoS2/PMMA organic glasses have very promising applications in optical devices such as optical limiters and optical shutters.
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