Abstract

The optical limiting performances of few-layer transitional metal dichalcogenides (TMDs) nanosheets in the VB group (VS₂, VSe₂, NbS₂, NbSe₂, TaS₂, and TaSe₂) were systematically investigated for the first time, to the best of our knowledge. It was found that these TMDs nanosheets showed a normalized transmittance in the range of 20%–40% at the input energy of 1.28 GW/cm². Ultralow initial threshold F_S (0.05–0.10 J/cm²) and optical limiting threshold F_OL (0.82–2.23 J/cm²) were achieved in the TMDs nanosheets, which surpassed most of the optical limiting materials. This work showed the potential of TMDs beyond MoS₂ in optical limiting field.

© 2022 Chinese Laser Press

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