Abstract
Two-dimensional (2D) materials have been extensively explored for various optoelectronic devices, showing tremendous application potential. Metal phosphorus trichalcogenide compounds are new intrinsic magnetic semiconductor materials that possess unique and excellent physical and optical properties. Among them, NiPS3 has a bandgap of 1.6 eV and is an intrinsic antiferromagnetic semiconductor. In our work, the nonlinear optical absorption and carrier dynamics of 2D NiPS3 nanosheets are studied by the I-scan system and time-resolved transient transmission spectroscopy. The thickness-dependent carrier relaxation time is obtained utilizing the pump-probe technique. The strong dependence of slow relaxation time on incident intensity is also reflected in the thick sample, which distinguishes the lattice thermal diffusion in 2D nanosheets from that of bulk. The saturation absorption and two-photon absorption coefficients are further achieved. Our results provide a perspective for the applications of NiPS3 nanosheets in optical devices such as micro saturable absorbers and on-chip ultrafast optical switches.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
