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arXiv 1502.04291cond-mat.mtrl-sci
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6,6,18-石墨二炔纳米带巨空穴和电子迁移率的理论预测

A theoretical prediction on huge hole and electron mobilities of 6,6,18-graphdiyne nanoribbons

Hongyu Ge, Guo Wang, Yi Liao

摘要:

用晶体轨道方法研究了二维6,6,18-石墨二炔及其一维纳米带。基于HSE 06泛函,一维限制增加了带隙。在带隙大于0.4eV的情况下,三十三个6,6,18-石墨二炔纳米带在室温下具有比扶手椅型石墨烯纳米带的最高值更大的多数载流子迁移率。与γ-石墨二炔不同,6,6,18-石墨二炔纳米带具有巨大的空穴和电子迁移率,这取决于它们是扶手椅型还是锯齿型。通过晶体轨道分析解释了其巨大的迁移率。6,6,18-石墨二炔纳米带的优异性能使其成为互补电路中高速电子器件的可能候选者。

英文摘要:

Two-dimensional 6,6,18-graphdiyne and the corresponding one-dimensional nanoribbons are investigated using crystal orbital method. Based on HSE06 functional, the one-dimensional confinement increases the band gaps. With band gaps larger than 0.4 eV, thirty-three 6,6,18-graphdiyne nanoribbons have larger majority carrier mobilities at room temperature than the highest value of armchair graphene nanoribbons. Unlike γ-graphdiyne, 6,6,18-graphdiyne nanoribbons have both huge hole and electron mobilities, depending on whether they are armchair or zigzag type. The huge mobilities are explained by crystal orbital analysis. The superior capabilities of 6,6,18-graphdiyne nanoribbons make them possible candidates for high speed electronic devices in complementary circuits.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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