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Laser exfoliation of 2D black phosphorus nanosheets and their application as a field emitter

机译：2D黑色磷纳米片的激光剥离及其作为现场发射器的应用

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摘要

Highly crystalline two dimensional (2D) few layered black phosphorus (BP) nanosheets have been synthesized via a one step facile laser irradiation technique under optimized experimental conditions. The field emission investigations on the few layered black phosphorus nanosheets were carried out at the base pressure 1 x 10(-8) mbar. The morphological, elemental, optical, and structural analysis of the as-synthesized black phosphorus sample was carried out using SEM, AFM, EDAX, TEM, and Raman spectroscopy. The turn-on values of the BP nanosheets emitter were found to be significantly lower than that of earlier reports of BP nanosheets, graphene, and carbon nanotubes based field emitters due to the high field enhancement factor (beta) similar to 2986 associated with atomically thin/sharp edges of the BP nanosheets emitter. The emission current versus time plot depicts the good emission current stability with a pre-set value of 1 mu A for similar to 5 h duration. Our facile synthesis approach and the robust field emitter nature of the BP nanosheets makes them a potential candidate for a practical electron source in vacuum micro/nanoelectronic devices.
机译：高度结晶二维（2D）在优化的实验条件下通过一步容易激光辐射技术合成了几维层状黑磷（BP）纳米晶片。少数层状黑磷纳米片上的场排放调查在基础压力1×10（-8）曼巴氏内进行。使用SEM，AFM，EDAX，TEM和拉曼光谱进行AS合成的黑磷样品的形态学，元素，光学和结构分析。发现BP NanosheSs发射器的开启值显着低于BP纳米片，石墨烯和基于碳纳米管的较早报告的基础发射器，由于与原子薄相关的2986相似的高场增强因子（β） / BP Nanosheets发射器的尖锐边缘。发射电流随时间变化的曲线图描绘了与1亩A的类似至5h持续时间的预先设定的值的良好的发射电流的稳定性。我们的容易合成方法和BP纳米片的鲁棒场发射器性质使其成为真空微/纳电子器件中实用电子源的潜在候选者。

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  • 来源
    《RSC Advances》 |2016年第113期|共6页
  • 作者

    Suryawanshi Sachin R.; More Mahendra A.; Late Dattatray J.;

  • 作者单位

    Savitribai Phule Pune Univ Ctr Adv Studies Mat Sci &

    Condensed Matter Phys Dept Phys Pune 411007 Maharashtra India;

    Savitribai Phule Pune Univ Ctr Adv Studies Mat Sci &

    Condensed Matter Phys Dept Phys Pune 411007 Maharashtra India;

    CSIR Natl Chem Lab Dr Homi Bhabha Rd Pune 411008 Maharashtra India;

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  • 正文语种 eng
  • 中图分类 化学;
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