材料科学
剥脱关节
X射线光电子能谱
压电
能量收集
纳米技术
限制
光电子学
相(物质)
压电系数
化学工程
复合材料
能量(信号处理)
机械工程
石墨烯
工程类
统计
有机化学
化学
数学
作者
Jyoti Shakya,H. N. Gayathri,Arindam Ghosh
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2021-11-26
卷期号:33 (7): 075710-075710
被引量:2
标识
DOI:10.1088/1361-6528/ac368b
摘要
MoS2 is an intrinsic piezoelectric material which offers applications such as energy harvesting, sensors, actuators, flexible electronics, energy storage and more. Surprisingly, there are not any suitable, yet economical methods that can produce quality nanosheets of MoS2 in large quantities, hence limiting the possibility of commercialisation of its applications. Here, we demonstrate controlled synthesis of highly crystalline MoS2 nanosheets via liquid phase exfoliation of bulk MoS2, following which we report piezoelectric response from the exfoliated nanosheets. The method of piezo force microscopy (PFM) was employed to explore the piezo response in mono, bi, tri and multilayers of MoS2 nanosheets. The effective piezoelectric coefficient of MoS2 varies from 9.6 pm/V to 25.14 pm/V. We attribute piezoelectric response in MoS2 nanosheets to the defects formed in it during the synthesis procedure. The presence of defects is confirmed by X-ray photoelectron spectroscopy (XPS).
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