期刊
NANO LETTERS
卷 21, 期 19, 页码 8035-8042出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c02281
关键词
van der Waals heterostructures; interlayer exciton; high pressure engineering; electronic coupling; band structure
类别
资金
- National Key Research and Development Program of China [2016YFA0401503, 2018YFA0305700, 2016YFA0202302, 2020YFA0308800, 2016YFA0202300]
- National Natural Science Foundation of China [NSFC 11974088, 61875236, 61975007, 61527817, 11974045, 11575288]
- Beijing Natural Science Foundation [Z190006]
- Chinese Academy of Sciences [XDB30000000, XDB33000000, XDB25000000, QYZDBSSW-SLH013]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [Y202003]
Researchers have successfully achieved quantitative tuning of intralayer excitons in WS2/ MoSe2 heterostructures and observed the transition from intralayer excitons to interlayer excitons. The energy of interlayer excitons is in a locked or superstable state, unaffected by pressure.
The van der Waals (vdW) heterostructures have rich functions and intriguing physical properties, which has attracted wide attention. Effective control of excitons in vdW heterostructures is still urgent for fundamental research and realistic applications. Here, we successfully achieved quantitative tuning of the intralayer exciton of monolayers and observed the transition from intralayer excitons to interlayer excitons in WS2/ MoSe2 heterostructures, via hydrostatic pressure. The energy of interlayer excitons is in a locked or superstable state, which is not sensitive to pressure. The first-principles calculation reveals the stronger interlayer interaction which leads to enhanced interlayer exciton behavior in WS2/MoSe2 heterostructures under external pressure and reveals the robust peak of interlayer excitons. This work provides an effective strategy to study the interlayer interaction in vdW heterostructures and reveals the enhanced interlayer excitons in WS2/MoSe2, which could be of great importance for the material and device design in various similar quantum systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据