期刊
MATERIALS TODAY PHYSICS
卷 34, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtphys.2023.101069
关键词
Tellurium nanowires; Te-TMDC heterostructures; Epitaxial growth; Saturable absorption properties; Interlayer charge transfer
In this study, large-scale 1D/2D vertical Te-TMDC heterostructures were successfully grown via a two-step vapor phase deposition method, and the saturable absorption properties were significantly enhanced. This has positive implications for promoting saturable absorption properties and is of great significance for the development of next-generation nanophotonics and integrated photonics.
One-dimensional (1D) tellurium (Te) nanowires (NWs) have triggered intense attention due to their remarkable properties in electronics, optoelectronics and nonlinear optics. However, the saturable absorption properties of Te NWs and the ability to be bleached by strong pulsed energy need to be further improved. Van der Waals (vdW) heterostructures based on two-dimensional (2D) transition metal dichalcogenides (TMDCs) exhibit prominent nonlinear optical properties. Direct epitaxial growth of large-area 1D/2D Te-TMDC vdW heterostructures is still rarely investigated. Herein, we demonstrate the controllable epitaxial growth of large-scale 1D/2D vertical Te-TMDC heterostructures via two-step vapor phase deposition method. Our experimental results have confirmed that the saturable absorption properties of as-prepared Te-TMDC heterostructures can be obviously enhanced. The first principle calculations and surface potential measurements demonstrate that effective interlayer charge transfer between Te NWs and TMDC nanosheets is beneficial for promoting the saturable absorption properties. Systematic investigation of vdW Te-TMDC heterostructures with nonlinear optical properties is vital for the next generation of nanophotonics and integrated photonics, which paves the way for the development of saturable absorbers and light modulators based on Te-TMDC vdW heterostructures.
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