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碳纳米管/二硒化钼有机玻璃的非线性吸收、非线性散射和光限幅特性

孙悦 曲斌 全保刚

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碳纳米管/二硒化钼有机玻璃的非线性吸收、非线性散射和光限幅特性

孙悦, 曲斌, 全保刚

Nonlinear absorption, nonlinear scattering, and optical limiting properties of carbon nanotube/molybdenum diselenide organic glass

Sun Yue, Qu Bin, Quan Bao-Gang
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  • MoSe2的禁带宽度较窄(1.1–1.5 eV),且具有可调谐的激子光电效应,这样使其在光致发光、光电晶体管、太阳能电池和光学非线性等方面具有潜在的应用价值.然而,纯的MoSe2的光生电子空穴复合率较高,限制了其在某些光学领域中的应用.通过设计MoSe2的复合材料,可以降低材料的光生电子空穴复合率,从而扩展其应用领域.首先,通过热溶剂法合成CNT/MoSe2复合材料;然后,通过浇铸法将其分散在甲基丙烯酸甲酯(MMA)中制备成有机玻璃,其中MMA会聚合成聚甲基丙烯酸甲酯(PMMA),并利用改进的Z-扫描技术首次对CNT/MoSe2/PMMA有机玻璃的非线性吸收、非线性散射和光限幅特性进行了研究.研究表明,随着输入能量的变化,通过调节输入能量,CNT/MoSe2/PMMA有机玻璃表现出饱和吸收(SA)和从SA到反饱和吸收的转变.结合材料特性及应用条件要求,可以得到CNT/MoSe2/PMMA有机玻璃在光学设备,如光学限制器和锁模/调Q激光器等方向具有较好的应用前景.
    Because MoSe2 has broadband saturable absorption, and higher nonlinear refractive index. Compared with MoS2, thin-layered MoSe2 possesses very attractive properties, including narrow bandgap, low optical absorption coefficient, and large spin-splitting energy at the top of the valence band. The narrow bandgap and low optical absorption coefficient could make MoSe2 more applicable than MoS2. And the tunable excitation photoelectric effecthas great potential applications in the fields of photoluminescence, phototransistor, solar cells, nonlinear optics and other aspects. However, pure MoSe2 has high photogenerated recombination rate, thus limiting its applications in some optical fields. By designing nanocomposites of MoSe2, the photogenerated recombination rate of these materials can be reduced and their application field can be broadened. In this work, MoSe2 nanocomposites are prepared by simple methods. The two-dimensional layered MoSe2 nanosheets are combined with nanorods. By integrating the surface effect, small size effect and interfacial effect of CNT, the optical nonlinearity and optical limiting performance of MoSe2 composites are improved. The CNT/MoSe2 composite nanomaterials are first synthesized based on narrower band gap and lower light absorption coefficient of MoS2 than those of MoSe2 by growing MoSe2 nanoparticles on the surface of CNT through a solvothermal method, and then is dispersed in methyl methacrylate (MMA) to prepare an organic glass by a casting method, and the MMA is polymerized into poly (methyl methacrylate) (PMMA). The nonlinear absorption (NLA), nonlinear scattering (NLS) and optical limiting (OL) properties of the CNT/MoSe2/PMMA organic glass are studied by the modified Z-scan technique for the first time. The CNT/MoSe2/PMMA organic glass exhibits the saturable absorption (SA) and a changeover from SA to reverse saturable absorption by adjusting input energy. The experimental results show that the CNT/MoSe2/PMMA plexiglass exhibits better anti-saturation absorption and higher optical limiting properties than MoSe2/PMMA and CNT/PMMA plexiglass. Besides, the NLA and OL properties of the CNT/MoSe2/PMMA organic glass are enhanced compared with CNT/PMMA and MoSe2/PMMA organic glasses, which can be attributed to the existence of the C=C double bonds in CNTs, the layered structure of MoSe2 nanosheets, and the interfacial charge transfer between CNTs and MoSe2. And the results demonstrate that the CNT/MoSe2/PMMA organic glass is very promising for optical devices such as optical limiters and mode-locked/Q-switched lasers.
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    Wang K P, Feng Y Y, Chang C X, Zhan J X, Wang C W, Zhao Q Z, Coleman J N, Zhang L, Blau W J, Wang J 2014 Nanoscale 6 10530

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    Tai P T, Pan S D, Wang Y G, Tang J 2011 Opt. Commun. 284 1303

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    Jena K C, Bisht P B, Shaijumon M M, Ramaprabhu S 2007 Opt. Commun. 273 153

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    Wang J, Früchtl D, Blau W J 2010 Opt. Commun. 283 464

    [14]

    Qu B, Ouyang Q Y, Yu X B, Luo W H, Qi L H, Chen Y J 2015 Phys. Chem. Chem. Phys. 17 6036

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    Ouyang Q Y, Yu H L, Xu Z, Zhang Y, Li C Y, Qi L H, Chen Y J 2013 Appl. Phys. Lett. 102 031912

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    Kim K, Lee J U, Nam D, Cheong H 2016 ACS Nano 10 8113

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    Hopkins A R, Labatete-Goeppinger A C, Kim H, Katzman H A 2016 Carbon 107 77

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    Saha A, Jana M, Khanra P, Samanta P, Koo H, Murmu N C, Kuila T 2015 ACS Appl. Mater. Interfaces 7 14211

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    Sheik-Bahae M, Said A A, Wei T H, Hagan D J, Stryland E W V 1990 IEEE J. Quantum Electron. 26 760

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  • [1]

    Mak K F, Lee C, Hone J, Shan J, Heinz T F 2010 Phys. Rev. Lett. 105 136805

    [2]

    Dong N N, Li Y X, Feng Y Y, Zhang X F, Zhang X Y, Chang C X, Fan J T, Zhang L, Wang J 2015 Sci. Rep. 5 14646

    [3]

    Luo Z Q, Li Y Y, Zhong M, Huang Y Z, Wan X J, Peng J, Weng J 2015 Photon. Res. 3 A79

    [4]

    Hak K D, Lim D, Kore J 2015 Phys. Soc. 6 816

    [5]

    Weismann M, Panoiu N C 2016 Phys. Rew. B 94 035435

    [6]

    Wang W H, Wu Y L, Wu Q, Hua J J, Zhao J M 2016 Sci. Rep. 6 22072

    [7]

    Dawes A M C, Illing L, Clark S M, Gauthier D J 2005 Science 308 672

    [8]

    Han X F, Weng Y X, Wang R, Chen X H, Luo K H, Wu L A, Zhao J M 2008 Appl. Phys. Lett. 92 151109

    [9]

    Tongay S, Zhou J, Ataca C, Lo K, Matthews T S, Li J B, Grossman J C, Wu J Q 2012 Nano Lett. 12 5576

    [10]

    Wang K P, Feng Y Y, Chang C X, Zhan J X, Wang C W, Zhao Q Z, Coleman J N, Zhang L, Blau W J, Wang J 2014 Nanoscale 6 10530

    [11]

    Tai P T, Pan S D, Wang Y G, Tang J 2011 Opt. Commun. 284 1303

    [12]

    Jena K C, Bisht P B, Shaijumon M M, Ramaprabhu S 2007 Opt. Commun. 273 153

    [13]

    Wang J, Früchtl D, Blau W J 2010 Opt. Commun. 283 464

    [14]

    Qu B, Ouyang Q Y, Yu X B, Luo W H, Qi L H, Chen Y J 2015 Phys. Chem. Chem. Phys. 17 6036

    [15]

    Ouyang Q Y, Yu H L, Xu Z, Zhang Y, Li C Y, Qi L H, Chen Y J 2013 Appl. Phys. Lett. 102 031912

    [16]

    Kim K, Lee J U, Nam D, Cheong H 2016 ACS Nano 10 8113

    [17]

    Hopkins A R, Labatete-Goeppinger A C, Kim H, Katzman H A 2016 Carbon 107 77

    [18]

    Saha A, Jana M, Khanra P, Samanta P, Koo H, Murmu N C, Kuila T 2015 ACS Appl. Mater. Interfaces 7 14211

    [19]

    Sheik-Bahae M, Said A A, Wei T H, Hagan D J, Stryland E W V 1990 IEEE J. Quantum Electron. 26 760

    [20]

    Kurian P A, Vijayan C, Sathiyamoorthy K, SuchandSandeep C S, Philip R 2007 Nanoscale Res. Lett. 2 561

计量
  • 文章访问数:  4740
  • PDF下载量:  76
  • 被引次数: 0
出版历程
  • 收稿日期:  2018-08-23
  • 修回日期:  2018-09-29
  • 刊出日期:  2018-12-05

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