期刊
NANOTECHNOLOGY
卷 29, 期 22, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aab68a
关键词
silicene nanosheets; nonlinear absorption; saturable absorption; optical limiting
资金
- National Natural Science Foundation of China [11704227, 11304184]
- Natural Science Foundation of Shandong Province [ZR2017MF031]
- Scientific Research Foundation of Shandong University of Technology [4041/416033]
As the cousins of graphene, i.e. same group IVA element, the nonlinear absorption (NLA) properties of silicene nanosheets were rarely studied. In this paper, we successfully exfoliated the two-dimensional silicene nanosheets from bulk silicon crystal using liquid phase exfoliation method. The NLA properties of silicene nanosheets were systemically investigated for the first time, as we have known. Silicene performed exciting saturable absorption and two photon absorption (2PA) behavior. The lower saturable intensity and larger 2PA coefficient at 532 nm excitation indicates that silicene has potential application in ultrafast lasers and optical limiting devices, especially in visible waveband.
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