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Tribo-induced photoluminescent behavior of graphene and YSZ:Er/graphene composite films

机译：摩擦诱导的石墨烯和YSZ的光致发光行为：ER /石墨烯复合膜

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摘要

In the present work, a novel method was developed to study the evolving surface state of graphene film as it is subject to friction, characterized by photoluminescence properties. We prepared the graphene film (GF) and YSZ: Er (Er3+-Y3+ co-doped ZrO2)/graphene composite films (ZGCF). The Raman spectra and photoluminescence properties of the GF and ZGCF were characterized before and after the sliding friction. A remarkable phenomenon was observed that after friction the GF generated a more pronounced luminescence response than it had prior, apparently due to graphene quantum dots which were found in the wear debris of the GF. Furthermore, the introduction of graphene into YSZ: Er nanoparticles (NPs) resulted in an unmistakable red-shift on the main luminescence bands of ZGCF after the applied friction. This is explained by the formation of considerable graphene scrolls in the wear debris of ZGCF due to the interaction of the graphene and the YSZ: Er NPs. It can be concluded that changes to the configuration of graphene greatly influence the tribo-induced photoluminescence response. Our findings justify further investigation into the composition and morphology of worn surfaces in order to better understand how photoluminescence relates to frictional effects. In addition, this work proposes the in situ fabrication of graphene quantum dots and nanoscale scrolls as a new potential application of the tribo-induced photoluminescence study.
机译：在本作工作中，开发了一种新的方法，以研究石墨烯薄膜的进化表面状态，因为它受到摩擦的特征，其特征在于光致发光性质。我们制备了石墨烯膜（GF）和YSZ：ER（ER3 + -Y3 +共掺杂ZrO2）/石墨烯复合膜（ZGCF）。在滑动摩擦之前和之后，GF和ZGCF的拉曼光谱和光致发光性质的特征在于。观察到显着的现象，在摩擦之后，GF产生比在GF的磨损碎片中发现的石墨烯量子点所产生的更明显的发光响应。此外，将石墨烯引入YSZ：ER纳米颗粒（NPS）导致在施加摩擦之后ZGCF的主发光带上的明显红移。由于石墨烯和YSZ：ER NP的相互作用，通过在ZGCF的磨损碎片中形成相当的石墨烯卷轴来解释。可以得出结论，石墨烯配置的变化大大影响了摩擦诱导的光致发光应答。我们的调查结果证明了进一步调查磨损表面的组成和形态，以便更好地了解光致发光如何涉及摩擦效应。此外，这项工作提出了石墨烯量子点的原位制造，作为培养的光致发光研究的新潜在应用。

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  • 来源
    《RSC Advances》 |2018年第3期|共7页
  • 作者

    Wu Hongyan; Huang Ke; Li Jianliang; Jiang Fan; Zhao Xingming; Wang Lu; Jiang Shan;

  • 作者单位

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Jiangsu Key Lab Optoelect Detect Atmosphere &

    Oce Nanjing Jiangsu Peoples R China;

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Jiangsu Key Lab Optoelect Detect Atmosphere &

    Oce Nanjing Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Coll Mat Sci &

    Technol Nanjing Jiangsu Peoples R China;

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Jiangsu Key Lab Optoelect Detect Atmosphere &

    Oce Nanjing Jiangsu Peoples R China;

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Jiangsu Key Lab Optoelect Detect Atmosphere &

    Oce Nanjing Jiangsu Peoples R China;

    Nanjing Univ Informat Sci &

    Technol Sch Phys &

    Optoelect Engn Jiangsu Key Lab Optoelect Detect Atmosphere &

    Oce Nanjing Jiangsu Peoples R China;

    Univ Mississippi Dept Mech Engn University MS 38677 USA;

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  • 正文语种 eng
  • 中图分类 化学;
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