Citation: Jun-Hao DONG, Jia PAN, Chen-Yu YE, Ru WANG, Yong-Feng HUANG, Jing-Ying ZHENG, Hong-Bing ZHAN, Qian-Ting WANG. Ultrafast Nonlinear Optical Response of Two-dimensional MoS₂/Bi₂Te₃ Heterostructure[J]. Chinese Journal of Structural Chemistry, ;2021, 40(11): 1496-1504. doi: 10.14102/j.cnki.0254-5861.2011-3183 shu

Ultrafast Nonlinear Optical Response of Two-dimensional MoS₂/Bi₂Te₃ Heterostructure

Jun-Hao DONG ^{a, d} ,
Jia PAN ^c ,
Chen-Yu YE ^b ,
Ru WANG ^b ,
Yong-Feng HUANG ^b ,
Jing-Ying ZHENG ^b ,
Hong-Bing ZHAN ^b,, ,
Qian-Ting WANG ^{a, d,,}

a.
School of Materials Science and Engineering, Fujian University of Technology, Fuzhou 350118, China
b.
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
c.
School of Electronic, Electrical Engineering and Physics, Fujian University of Technology, Fuzhou 350118, China
d.
Fujian Provincial Key Laboratory of Advanced Materials Processing and Application, Fuzhou 350118, China

Corresponding author: Hong-Bing ZHAN, hbzhan@fzu.edu.cn Qian-Ting WANG, wqt@fjut.edu.cn
Received Date: 18 March 2021
Accepted Date: 19 April 2021

Fund Project: the Central Government Research Programs to Guide the Local Scientific and Technological Development 2018L3001National Natural Science Foundation of China 51872048National Natural Science Foundation of China U1732155Natural Science Foundation of Fujian Province 2020J01353

Figures(5)

Controlled stacking of different two-dimensional (2D) atomic layers hold great promise for significantly optimizing the optical properties of 2D materials and broadening their applications. Here, vertical 2D MoS₂/Bi₂Te₃ heterostructures with high crystallinity and optical quality have been successfully constructed, through drop-casting 2D Bi₂Te₃ flakes on chemical vapor deposition (CVD)-grown MoS₂ flakes. Based on our homebuilt micro Z-scan and pump-probe measurement, we precisely investigated and compared the nonlinear optical (NLO) performance of an individual micro-sized MoS₂ flake before and after stacking 2D Bi₂Te₃ nanoplates. Moreover, layer-dependent ultrafast carrier dynamics of CVD-grown MoS₂ flakes were also explored. Owing to the efficient charge transfer from the monolayer (1 L) MoS₂ to 2D Bi₂Te₃, the 1L MoS₂/Bi₂Te₃ heterostructure demonstrated excellent NLO performance with superior nonlinear saturable absorption coefficient and ultrashort carrier lifetime. Our work greatly enriches our understanding of 2D heterostructure and paves the way for designing new type of tunable 2D photonics materials by combining the optical advantages of different 2D materials.
- two-dimensional materials,
- nonlinear optics,
- ultrafast response
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Ultrafast Nonlinear Optical Response of Two-dimensional MoS₂/Bi₂Te₃ Heterostructure