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Edge modulation of electronics and transport properties of cliff-edge phosphorene nanoribbons

机译:电子的边缘调制和悬崖边缘的磷纳米带的传输特性

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Based on the first-principles calculations, we study the electronic structures and transport properties of cliff-like edge phosphorene nanoribbons (CPNRs), considering different types of edge passivation. The band structures of bare CPNRs possess the metallic features; while hydrogen (H), fluorine (F), chlorine (Cl) and oxygen (O) atoms-passivated CPNRs are semiconductor materials, and the band gap values mono-tonically decrease when the ribbon width increases. Moreover, the H and F-passivated CPNRs exhibit the direct band gap characteristics, while the Cl and O-passivated cases show the features of indirect band gap. In addition, the edge passivated CPNRs are more energetically stable than bare edge case. Mean while, our results also show that the transport properties of the CPNRs can be obviously influenced by the different edge passivation. (C) 2017 Published by Elsevier B.V
机译:基于第一性原理计算,我们考虑了不同类型的边缘钝化,研究了悬崖状边缘磷烯纳米带(CPNR)的电子结构和传输性质。裸露的CPNR的能带结构具有金属特征。氢(H),氟(F),氯(Cl)和氧(O)原子钝化的CPNRs是半导体材料,并且当带宽度增加时,带隙值单调减小。此外,H和F钝化的CPNR具有直接的带隙特性,而Cl和O钝化的情况则具有间接的带隙特征。另外,边缘钝化的CPNR比裸边缘情况在能量上更稳定。同时,我们的结果还表明,不同边缘钝化可以显着影响CPNR的传输性质。 (C)2017由Elsevier B.V发布

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