Molybdenum Disulfide/Double-Wall Carbon Nanotube Mixed-Dimensional Heterostructures

Xueyin Bai*, Zhenyu Xu, Qiang Zhang, Shisheng Li, Yunyun Dai, Xiaoqi Cui, Hoon Hahn Yoon, Lide Yao, Hua Jiang, Mingde Du, Yi Zhang, Esko I. Kauppinen, Zhipei Sun

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Mixed-dimensional heterostructures which combine materials with different dimensions have emerged to expand the scope and functionality of van der Waals heterostructures. Here, a direct synthesis method of molybdenum disulfide/double-wall carbon nanotube (MoS2/DWCNT) mixed-dimensional heterostructures by sulfurating a molten salt, Na2MoO4, on a substrate covered with a DWCNT film is reported. The synthesized heterostructures are comprehensively characterized and their stacking order is confirmed to be MoS2 under the DWCNTs, although the DWCNT film is transferred on the substrate first. Moreover, field-effect transistors based on the heterostructure are fabricated for photodetection, and an abnormal negative photoresponse is discovered due to the strong carrier transfer in the mixed-dimensional heterostructures under light incidence. The MoS2/DWCNT heterostructure results provide a new approach for the synthesis and applications of mixed-dimensional heterostructures.

Original languageEnglish
Article number2200193
JournalAdvanced Materials Interfaces
Volume9
Issue number13
Early online date18 Mar 2022
DOIs
Publication statusPublished - 4 May 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • chemical vapor deposition
  • double-wall carbon nanotube
  • mixed-dimensional heterostructure
  • molybdenum disulfide
  • negative photoresponse
  • stacking order

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