Performance of arsenene and antimonene double-gate MOSFETs from first principles.
Performance of arsenene and antimonene double-gate MOSFETs from first principles.
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DOI:
10.1038/ncomms12585
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发表时间:
2016-08-25
影响因子:
16.6
通讯作者:
Fiori, Gianluca
中科院分区:
文献类型:
--
作者:
Pizzi, Giovanni;Gibertini, Marco;Dib, Elias;Marzari, Nicola;Iannaccone, Giuseppe;Fiori, Gianluca
In the race towards high-performance ultra-scaled devices, two-dimensional materials offer an alternative paradigm thanks to their atomic thickness suppressing short-channel effects. It is thus urgent to study the most promising candidates in realistic configurations, and here we present detailed multiscale simulations of field-effect transistors based on arsenene and antimonene monolayers as channels. The accuracy of first-principles approaches in describing electronic properties is combined with the efficiency of tight-binding Hamiltonians based on maximally localized Wannier functions to compute the transport properties of the devices. These simulations provide for the first time estimates on the upper limits for the electron and hole mobilities in the Takagi's approximation, including spin–orbit and multi-valley effects, and demonstrate that ultra-scaled devices in the sub-10-nm scale show a performance that is compliant with industry requirements. The family of two-dimensional materials is ever growing, and theoretical calculations are a useful tool to predict the suitability of emerging monolayers for electronic applications. Here, the authors perform accurate simulations of complete field-effect devices based on arsenene and antimonene.
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