Solution-processed 2D materials hold promise for their scalable applications. However, the random, fragmented nature of the solution-processed nanoflakes and the poor percolative conduction through their discrete networks limit the performance of the enabled devices. To overcome the problem, conduction modulation of the solution-processed 2D materials is reported via Stark effect. Using liquid-phase exfoliated molybdenum disulfide (MoS₂) as an example, nonlinear conduction switching with a ratio of >10⁵ is demonstrated by the local fields from the interfacial ferroelectric P(VDF-TrFE). Through density-functional theory calculations and in situ Raman scattering and photoluminescence spectroscopic analysis, the modulation is understood to arise from a charge redistribution in the solution-processed MoS₂. Beyond MoS₂, the modulation may be shown effective for the other solution-processed 2D materials and low-dimensional materials. The modulation can open their electronic device applications, for instance, thin-film nonlinear electronics and non-volatile memories.

中文翻译：

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溶液加工二维材料的传导调制

经过溶液处理的二维材料有望实现可扩展的应用。然而，溶液处理的纳米薄片的随机性、碎片性以及离散网络的渗透传导性较差，限制了所用器件的性能。为了克服这个问题，通过斯塔克效应报告了溶液处理的二维材料的传导调制。以液相剥离二硫化钼(MoS ₂ )为例，界面铁电P(VDF-TrFE)的局部场证明了比率>10 ⁵的非线性传导切换。通过密度泛函理论计算以及原位拉曼散射和光致发光光谱分析，调制被理解为由溶液处理的MoS ₂中的电荷重新分布引起。除了 MoS ₂之外，调制可能对其他溶液处理的二维材料和低维材料有效。该调制可以打开其电子设备应用，例如薄膜非线性电子器件和非易失性存储器。