Ultrafast Optoelectronic Processes in 1D Radial van der Waals Heterostructures: Carbon, Boron Nitride, and MoS2 Nanotubes with Coexisting Excitons and Highly Mobile Charges

• DOI: 10.1021/acs.nanolett.0c00504
• Publication Date: 2020-04-23T17:04:25Z
• Authors: Maria G. Burdanova; Reza J. Kashtiban; Yongjia Zheng; Rong Xiang; Shohei Chiashi; Jack Matthew Woolley; Michael Staniforth; Emily Sakamoto-Ra...; Xue Xie; Matthew Broome; Jeremy Sloan; Anton Anisimov; Esko I. Kauppinen; Shigeo Maruyama; James Lloyd-Hughes
• Keywords: Molybdenum disulfide

Heterostructures built from 2D, atomically thin crystals are bound by the van der Waals force and exhibit unique optoelectronic properties. Here, we report structure, composition properties of 1D heterostructures comprising carbon nanotubes wrapped boron nitride molybdenum disulfide (MoS2). The high quality composite was directly made evident on atomic scale transmission electron microscopy, macroscopic a study heterostructure's equilibrium ultrafast optoelectronics. Ultrafast pump–probe spectroscopy across visible terahertz frequency ranges identified that, in MoS2 nanotubes, excitons coexisted with prominent population free charges. mobility comparable to that found high-quality crystals. highlights potential for nanoscale devices.