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首页> 外文会议>International Vacuum Nanoelectronics Conference >Field emission investigation of composites of Polypyrrole with graphene oxide, reduced graphene oxide and graphene nanoribbons
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Field emission investigation of composites of Polypyrrole with graphene oxide, reduced graphene oxide and graphene nanoribbons

机译：用氧化石墨烯，氧化石墨烯和石墨烯纳米氧化酯复合材料的场排放研究

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The monomer pyrrole has been polymerized by chemical route in the presence of graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoribbons (GNR) separately to prepare nanocomposites as Polypyrrole-GO (PGO), PPy-rGO (PRGO), PPy-GNR (PGNR), respectively. The morphological, chemical and structural characterization of the as-synthesized products was carried out using scanning electron microscopy (SEM), Raman and fourier transform infrared (FTIR) spectroscopy. Field emission (FE) studies of PGO, PRGO, PGNR emitters were performed at the base pressure of 1×10-8 mbar in planar `diode' configuration. Onset and threshold field values corresponding to emission current densities of 1 and 100 μA/cm2 are observed to be 1.5 and 2.3V/μm for PGO, 1.4 and 2.2 V/μm for PRGO and lowest for PGNR as 0.9 and 1.2V/μm, respectively. The maximum emission current density of 2.5 mA/cm2 drawn for PGO at the applied electric field of 3.2V/μm, 1.2 mA/cm2 at 3.6V/μm from the PRGO and 8 mA/cm2 at the field of 2.2 V/μm from the PGNR emitters. An emission current versus time (I-t) plot shows stable emission behavior for the preset current values.
机译：单体吡咯通过化学途径在石墨烯（GO）的存在下，分别在氧化石墨烯（GO），还原的氧化物（RGO）和石墨烯纳米纤维（GNR）中，以制备纳米复合材料作为聚吡咯 - GO（PGO），PPY-RGO（PRGO），分别PPY-GNR（PGNR）。使用扫描电子显微镜（SEM），拉曼和傅立叶变换红外（FTIR）光谱进行使用的形态学，化学和结构表征。 PGO，PRGO，PGNR发射器的场发射（Fe）研究在平面“二极管”配置中在1×10-8毫巴的基础压力下进行。对应于发射电流密度为1和100μA/ cm 2的阈值和阈值场值，对于PGO，1.4和2.2V /μm，对于PRGO，PGNR最低为0.9和1.2V /μm，分别。在3.2V /μm的施加电场，从PRGO的3.2V /μm，1.2mA / cm2的施加电场绘制的最大发射电流密度为3.2V /μm，在2.2V /μm处的8mA / cm2处为3.6V / mm。 PGNR发射器。发射电流与时间（I-T）图显示了预设电流值的稳定发射行为。

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