arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1801.00530cond-mat.mtrl-scicond-mat.mes-hallphysics.app-ph
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基于层状二维材料的鲁棒忆阻器

Robust memristors based on layered two-dimensional materials

Miao Wang, Songhua Cai, Chen Pan, Chenyu Wang, Xiaojuan Lian, Ye Zhuo, Kang Xu, Tianjun Cao, Xiaoqing Pan, Baigeng Wang, Shijun Liang, J. Joshua Yang, Peng Wang, Feng Miao

摘要:

基于层状二维(2D)材料的范德华异质结构提供了前所未有的机会,通过设计来创建具有原子精度的材料。通过组合每个组件的优异特性,这种异质结构还提供了可能的解决方案来解决电子器件的各种挑战,特别是具有垂直多层结构的电子器件。在这里,我们首次报告了基于完全分层的2D材料(石墨烯/MoS 2-xOx/石墨烯)的范德华异质结构的鲁棒忆阻器的实现,并展示了传统忆阻器所缺乏的良好的热稳定性。这些器件显示出出色的开关性能,耐久性高达107,工作温度高达340 oC。通过结合原位高分辨率TEM和STEM研究,我们已经表明MoS 2-xOx开关层与石墨烯电极及其原子级尖锐界面一起负责在高温下观察到的热稳定性。一个定义明确的导电通道和开关机制的基础上的氧离子的迁移也被揭示。此外,完全分层的2D材料为柔性电子应用提供了良好的机械灵活性,我们的实验证明了对超过1000次弯曲循环的良好耐久性。我们的研究结果展示了一个通用的和令人鼓舞的途径工程所需的器件性能,通过使用二维范德华异质结构。

英文摘要:

Van der Waals heterostructure based on layered two-dimensional (2D) materials offers unprecedented opportunities to create materials with atomic precision by design. By combining superior properties of each component, such heterostructure also provides possible solutions to address various challenges of the electronic devices, especially those with vertical multilayered structures. Here, we report the realization of robust memristors for the first time based on van der Waals heterostructure of fully layered 2D materials (graphene/MoS2-xOx/graphene) and demonstrate a good thermal stability lacking in traditional memristors. Such devices have shown excellent switching performance with endurance up to 107 and a record-high operating temperature up to 340oC. By combining in situ high-resolution TEM and STEM studies, we have shown that the MoS2-xOx switching layer, together with the graphene electrodes and their atomically sharp interfaces, are responsible for the observed thermal stability at elevated temperatures. A well-defined conduction channel and a switching mechanism based on the migration of oxygen ions were also revealed. In addition, the fully layered 2D materials offer a good mechanical flexibility for flexible electronic applications, manifested by our experimental demonstration of a good endurance against over 1000 bending cycles. Our results showcase a general and encouraging pathway toward engineering desired device properties by using 2D van der Waals heterostructures.

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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