.png){kind=icon}
返回
Strain-Dependent Edge Structures in MoS2 Layers
.png){kind=icon}
OA
AI
DOI：10.1021/acs.nanolett.7b03627.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Edge structures are low-dimensional defects unavoidable in layered materials of the transition metal dichalcogenides (TMD) family. Among the various types of such structures, the armchair (AC) and zigzag (ZZ) edge types are the most common. It has been predicted that the presence of intrinsic strain localized along these edges structures can have direct implications for the customization of their electronic properties. However, pinning down the relation between local structure and electronic properties at these edges is challenging. Here, we quantify the local strain field that arises at the edges of MoS2 flakes by combining aberration-corrected transmission electron microscopy (TEM) with the geometrical-phase analysis (GPA) method. We also provide further insight on the possible effects of such edge strain on the resulting electronic behavior by means of electron energy loss spectroscopy (EELS) measurements. Our results reveal that the two-dominant edge structures, ZZ and AC, induce the formation of different amounts of localized strain fields. We also show that by varying the free edge curvature from concave to convex, compressive strain turns into tensile strain. These results pave the way toward the customization of edge structures in MoS2, which can be used to engineer the properties of layered materials and thus contribute to the optimization of the next generation of atomic-scale electronic devices built upon them.
Keyword:
Transition-metal dichalcogenides
edge structures
strain
aberration-corrected transmission electron microscopy
electron energy loss spectroscopy
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
9.1
论文数:
2.7W
被引数:
16.5W
机构
引用论文
Enhanced Hydrogen Evolution Catalysis from Chemically Exfoliated Metallic MoS2 Nanosheets化学剥离的金属MoS2纳米片增强的析氢催化
PREAI
分享收藏Effects of confinement and environment on the electronic structure and exciton binding energy of MoS2 from first principles限制和环境对MoS2电子结构和激子结合能的影响.png)
PHYSICAL REVIEW B
PHYSICAL REVIEW BIF3.7
PREAI
分享收藏Engineering the surface structure of MoS2 to preferentially expose active edge sites for electrocatalysis设计MoS2的表面结构以优先暴露用于电催化的活性边缘位点NATURE MATERIALS
NATURE MATERIALSIF38.5
PREAI
分享收藏
查看更多内容