Electronic and transport properties of zigzag phosphorene nanoribbons doped with ordered Si atoms
Electronic and transport properties of zigzag phosphorene nanoribbons doped with ordered Si atoms
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有序硅原子掺杂的锯齿形磷烯纳米带的电子和输运特性
DOI：
10.1016/j.physleta.2019.126127
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发表时间：
2020-02-28
影响因子：
2.6
通讯作者：
Yao, K. L.
中科院分区：
文献类型：
--
作者：
Liu, N.;Liu, J. B.;Yao, K. L.
利用密度泛函理论（DFT）和非平衡格林函数方法，研究了硅原子有序掺杂的锯齿状磷烯纳米带（ZPNRS）的电子结构和输运性质。我们的结果表明，原始和硅掺杂的 ZPNR 都表现出金属特性，并且掺杂的 ZPNR 纳米带的电导可以通过改变掺杂位置和浓度来有效调节。由于掺杂位置不同，即使掺杂浓度相同，也可以获得不同的传输电流。此外，电流放大系数随掺杂浓度而变化。此外，与原始体系相比，在掺杂体系（Si3）中也可以观察到负微分电阻效应，这种效应发生在较低的偏置范围内。 (C) 2019 Elsevier B.V. 保留所有权利。
Using density functional theory (DFT) and the nonequilibrium Green's function method, we explored the electronic structures and transport properties of zigzag phosphorene nanoribbons (ZPNRS) with Ordered doping of Si atoms. Our results show that both pristine and Si-doped ZPNRs exhibit metallic properties and the conductance of the doped ZPNRs nanoribbons can be modulated effectively by changing doping positions and concentrations. As different doping positions, different transmission currents can be obtained even with the same doping concentration. Moreover, current amplification factors vary with the doping concentrations. In addition, compared with the pristine system, negative differential resistance effect can also be observed in doped system (Si3), which occurs in lower bias range. (C) 2019 Elsevier B.V. All rights reserved.