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首页> 外文期刊>Journal of Materials Research >Effects of the fabrication temperature and oxygen flux on the properties and nitrogen dioxide sensitivity of the tin oxides-tin/graphene hybrid sensor
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Effects of the fabrication temperature and oxygen flux on the properties and nitrogen dioxide sensitivity of the tin oxides-tin/graphene hybrid sensor

机译：制备温度和氧气通量对氧化锡-锡/石墨烯混合传感器性能和二氧化氮敏感性的影响

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摘要

The 1 nm tin oxides-tin (SnO_x-Sn) compound films were thermally evaporated onto the chemical vapor deposition (CVD)-grown graphene films for the improved nitrogen dioxide (NO_2) gas sensitivity, and the effects of the fabrication temperature and oxygen (O_2) flux on the properties of the SnO_x-Sn/graphene hybrid sensors including their composition, morphology, and microstructure as well as NO_2 sensitivity were investigated. The composition of the SnO_x-Sn compound films exhibited strong dependence on the fabrication temperature and O_2 flux which could be ascribed to the hybrid effect of the desorption of the oxygen functional groups on the graphene and oxidation of the graphene and Sn. Such combining effects also demonstrated tremendous influence on the SnO_x-Sn film morphology, in which the enhanced desorption of the oxygen functional groups on the graphene together with the oxidation of Sn with increasing fabrication temperature would facilitate the formation of large grain-sized and discontinuous films while the increasing O_2 flux showed the opposite effects. Meanwhile, the crystallization of the SnO_x-Sn compound films was promoted and deteriorated with the increasing temperature and O_2 flux, respectively. The SnO_x-Sn firm morphology played vital role in NO_2 gas sensitivity at room temperature, and the mechanism responsible for that was also discussed.
机译：将1 nm的氧化锡-锡（SnO_x-Sn）复合膜热蒸发到化学气相沉积（CVD）生长的石墨烯膜上，以提高二氧化氮（NO_2）的气体敏感性以及制造温度和氧气的影响（研究了O_2）对SnO_x-Sn /石墨烯杂化传感器性能的影响，包括其组成，形态，微观结构以及NO_2的敏感性。 SnO_x-Sn化合物薄膜的组成对制造温度和O_2通量具有很强的依赖性，这可以归因于氧官能团在石墨烯上的解吸以及石墨烯和Sn的氧化的混合效应。这种结合效应还显示出对SnO_x-Sn膜形态的巨大影响，其中随着制造温度的升高，石墨烯上的氧官能团的解吸增强以及Sn的氧化会促进大晶粒尺寸和不连续膜的形成而增加的O_2通量则显示相反的效果。同时，SnO_x-Sn化合物薄膜的结晶分别随着温度和O_2通量的升高而促进和劣化。 SnO_x-Sn的牢固形态在室温下对NO_2气敏性中起着至关重要的作用，并讨论了引起这种现象的机理。

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  • 来源
    《Journal of Materials Research》 |2016年第14期|1993-2003|共11页
  • 作者

    Haichuan Mu; Keke Wang; Haifen Xie;

  • 作者单位

    Department of Physics, School of Science, East China University of Science and Technology, Shanghai 200237, People's Republic of China;

    Department of Physics, School of Science, East China University of Science and Technology, Shanghai 200237, People's Republic of China;

    Department of Physics, School of Science, East China University of Science and Technology, Shanghai 200237, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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