Zero-static power radio-frequency switches based on MoS(2) atomristors.
Zero-static power radio-frequency switches based on MoS(2) atomristors.
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DOI:
10.1038/s41467-018-04934-x
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发表时间:
2018-06-28
影响因子:
16.6
通讯作者:
Akinwande D
中科院分区:
文献类型:
--
作者:
Kim M;Ge R;Wu X;Lan X;Tice J;Lee JC;Akinwande D
Recently, non-volatile resistance switching or memristor (equivalently, atomristor in atomic layers) effect was discovered in transitional metal dichalcogenides (TMD) vertical devices. Owing to the monolayer-thin transport and high crystalline quality, ON-state resistances below 10 Ω are achievable, making MoS2 atomristors suitable as energy-efficient radio-frequency (RF) switches. MoS2 RF switches afford zero-hold voltage, hence, zero-static power dissipation, overcoming the limitation of transistor and mechanical switches. Furthermore, MoS2 switches are fully electronic and can be integrated on arbitrary substrates unlike phase-change RF switches. High-frequency results reveal that a key figure of merit, the cutoff frequency (fc), is about 10 THz for sub-μm2 switches with favorable scaling that can afford fc above 100 THz for nanoscale devices, exceeding the performance of contemporary switches that suffer from an area-invariant scaling. These results indicate a new electronic application of TMDs as non-volatile switches for communication platforms, including mobile systems, low-power internet-of-things, and THz beam steering. The wide application of wireless communications in various technologies calls for the development of robust yet compact radio-frequency switches. Here, Kim et al. utilize MoS2 based non-volatile memristors to switch up to THz frequencies in sub µm2 areas, whilst the switches consume zero-static energy.
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