Tuning electrical and interfacial thermal properties of bilayer MoS2via electrochemical intercalation

Feng Xiong, Eilam Yalon, Connor J. McClellan, Jinsong Zhang, Ozgur Burak Aslan, Aditya Sood, Jie Sun, Christopher M. Andolina, Wissam A. Saidi, Kenneth E. Goodson, Tony F. Heinz, Yi Cui, Eric Pop

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Layered two-dimensional (2D) materials such as MoS2 have attracted much attention for nano- and opto-electronics. Recently, intercalation (e.g. of ions, atoms, or molecules) has emerged as an effective technique to modulate material properties of such layered 2D films reversibly. We probe both the electrical and thermal properties of Li-intercalated bilayer MoS2 nanosheets by combining electrical measurements and Raman spectroscopy. We demonstrate reversible modulation of carrier density over more than two orders of magnitude (from 0.8 × 1012 to 1.5 × 1014 cm-2), and we simultaneously obtain the thermal boundary conductance between the bilayer and its supporting SiO2 substrate for an intercalated system for the first time. This thermal coupling can be reversibly modulated by nearly a factor of eight, from 14 ± 4.0 MW m-2 K-1 before intercalation to 1.8 ± 0.9 MW m-2 K-1 when the MoS2 is fully lithiated. These results reveal electrochemical intercalation as a reversible tool to modulate and control both electrical and thermal properties of 2D layers.

Original languageEnglish (US)
Article number265202
Issue number26
StatePublished - Jun 25 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Mechanics of Materials
  • Mechanical Engineering
  • Bioengineering
  • Electrical and Electronic Engineering
  • General Materials Science


  • Raman
  • electrical
  • intercalation
  • thermal
  • tunable
  • two-dimensional


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