Elastic Properties of Chemical-Vapor-Deposited Monolayer MoS 2 , WS 2 , and Their Bilayer Heterostructures
University of California, Berkeley · University of Science and Technology of China · +1 more institution
Abstract
Elastic properties of materials are an important factor in their integration in applications. Chemical vapor deposited (CVD) monolayer semiconductors are proposed as key components in industrial-scale flexible devices and building blocks of two-dimensional (2D) van der Waals heterostructures. However, their mechanical and elastic properties have not been fully characterized. Here we report high 2D elastic moduli of CVD monolayer MoS2 and WS2 (∼170 N/m), which is very close to the value of exfoliated MoS2 monolayers and almost half the value of the strongest material, graphene. The 2D moduli of their bilayer heterostructures are lower than the sum of 2D modulus of each layer but comparable to the corresponding…
Citation impact
- FWCI
- 13.29
- Percentile
- 100%
- References
- 44
Authors
13- KLKai LiuCorresponding
University of California, Berkeley
- QYQimin Yan
University of California, Berkeley
- MCMichelle Chen
University of California, Berkeley
- WFWen Fan
University of Science and Technology of China, University of California, Berkeley
- YSYinghui Sun
University of California, Berkeley
Topics & keywords
- Monolayer
- Bilayer
- van der Waals force
- Elastic modulus
- Semiconductor
- Heterojunction