arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.6499cond-mat.mes-hall
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工作于千兆赫频率的MoS2晶体管

MoS2 Transistors Operating at Gigahertz Frequencies

Daria Krasnozhon, Dominik Lembke, Clemens Nyffeler, Yusuf Leblebici, Andras Kis

摘要:

直接带隙和半导体形状因子的存在引起了人们对过渡金属二硫属化物(TMD)族的二维(2D)半导体的极大兴趣,其中二硫化钼(MoS2)是该族材料中研究最多的代表。虽然已经使用双金属MoS2展示了各种电子元件、逻辑电路和光电子器件,但是对于它们在期望商业器件起作用的高频下的性能知之甚少。在这里,我们报告在千兆赫频率范围内工作的顶栅MoS2晶体管。我们的器件显示截止频率达到6 GHz。带隙的存在也会导致电流饱和,从而允许功率和电压增益,所有这些都在千兆赫范围内。这表明MoS2可能是一种有趣的材料,用于实现高速放大器和逻辑电路,其器件缩放有望进一步提高性能。我们的工作代表了基于二维半导体实现高频模拟和数字电路的第一步。

英文摘要:

The presence of a direct band gap and an ultrathin form factor has caused a considerable interest in two-dimensional (2D) semiconductors from the transition metal dichalcogenides (TMD) family with molybdenum disulphide (MoS2) being the most studied representative of this family of materials. While diverse electronic elements, logic circuits and optoelectronic devices have been demonstrated using ultrathin MoS2, very little is known about their performance at high frequencies where commercial devices are expected to function. Here, we report on top-gated MoS2 transistors operating in the gigahertz range of frequencies. Our devices show cutoff frequencies reaching 6 GHz. The presence of a band gap also gives rise to current saturation, allowing power and voltage gain, all in the gigahertz range. This shows that MoS2 could be an interesting material for realizing high-speed amplifiers and logic circuits with device scaling expected to result in further improvement of performance. Our work represents the first step in the realization of high-frequency analog and digital circuits based on two-dimensional semiconductors.

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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