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首页> 外文期刊>IEEE sensors journal >Defected Graphene as Ammonia Sensor: Theoretical Insight
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Defected Graphene as Ammonia Sensor: Theoretical Insight

机译：变形石墨烯作为氨传感器的理论研究

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摘要

Defects are often symbolized as deformity in material that deteriorate its performance. However, in nanoscale regime, defects lead to generate a useful and novel material for device applications. In the present report, the vacancy defects, i.e., single vacancy and double vacancy defects (with different symmetry) on graphene sheet have been analyzed to understand the electronic as well as transport properties using density functional theory and NEGF approach. Conductance, current- voltage, and sensitivity analysis of these defected graphene sheets have been examined for its suitability for gas sensing application particularly for ammonia gas. The study observes that a single vacancy defected graphene is a good candidate for ammonia molecule sensing in comparison to double vacancy.
机译：缺陷通常被表示为材料变形，从而降低其性能。然而，在纳米尺度上，缺陷导致产生用于器件应用的有用且新颖的材料。在本报告中，已使用密度泛函理论和NEGF方法分析了石墨烯片材上的空位缺陷（即单空位和双空位缺陷（具有不同的对称性））以了解电子和传输性质。已经检查了这些缺陷石墨烯片的电导率，电流电压和灵敏度分析，以了解其在气体传感应用（尤其是氨气）中的适用性。该研究发现，与双空位相比，单空位缺陷的石墨烯是氨分子感测的良好候选者。

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