Polymer-Decorated 2D MoS2 Synaptic Transistors for Biological Bipolar Metaplasticities Emulation

• 作者: Biao Liu Jie Jiang Jun He Junliang Yang Yuhang Zhao
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2020,（8）
• 所属期刊栏目: CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY
• 页码范围: 177-188
• 页数: 12页
• 语种: 英文
• DOI: 10.1088/0256-307X/37/8/088501

摘要

Biological bipolar metaplasticities were successfully mimicked in two-dimensional (2D) MoS2 transistors via the implementation of two different MoS2 surface decorations,poly (vinyl alcohol) (PVA) and chitosan bio-polymers.Interestingly,the depressing metaplasticity was successfully mimicked when the PVA bio-polymer was used as the surface decoration layer,whereas the metaplasticity of long-term potentiation was realized when the chitosan bio-polymer was taken as the surface decoration layer.Furthermore,the electronic band structures of the 2D MoS2 devices with different surface decorations were further investigated using first-principles calculations for understanding the underlying mechanisms of such bipolar metaplasticities.These results will deepen our understanding of metaplasticity,and have great potential in neuromorphic computing applications.