Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (5): 659-667.DOI: 10.19894/j.issn.1000-0518.230283

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Third‑Order Nonlinear Optical Properties of Molybdenum Diselenide/Graphene Composite

Yan-Li ZU1, Wan-Lu LI2, Jia LIU1, Shan LIN1, Sen LI1(), Chun-Ying HE2()   

  1. 1.Department of Pharmaceutics,Daqing Branch,Harbin Medical University,Daqing 163319,China
    2.Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China
  • Received:2023-09-19 Accepted:2024-03-13 Published:2024-05-01 Online:2024-06-03
  • Contact: Sen LI,Chun-Ying HE
  • About author:chunyinghe_hlju@163.com
    lisen_116@163.com
  • Supported by:
    the National Natural Science Foundation of China(61841504)

Abstract:

Molybdenum diselenide/graphene (MoSe2/rGO) composite was synthesized by a facile solvothermal reaction, and the molybdenum diselenide/graphene/polyvinyl alcohol(MoSe2/rGO/PVA) film was further prepared by simple drop casting technique. The structure, morphology, component and absorption characteristics of MoSe2/rGO composite were analyzed by X-ray diffraction, raman spectra, fourier transform infrared spectrometry, transmission electron microscope, X-ray photoelectron spectrometer and ultraviolet visible spectrophotometer. The third order nonlinear optical (NLO) properties of MoSe2/rGO solution and film were investigated using the Z-scan technique at 1064 and 532 nm with 4 ns laser pulses. The results demonstrate that the third order NLO properties of MoSe2/rGO/PVA film was larger than that of the MoSe2 solution, MoSe2/rGO solution and MoSe2 film. The MoSe2/rGO/PVA film exhibits much larger nonlinear absorption coefficient with incident energy of 25 μJ at 532 nm. The results pave the way for the application of transition metal dichalcogenides/graphene composite in the optical limiting and laser mode-locking.

Key words: Nonlinear optical properties, Molybdenum diselenide/graphene composite, Film, Z-scan

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