Stabilizing the commensurate charge-density wave in 1T-tantalum disulfide at higher temperatures via potassium Intercalation

Article

Abstract

The 1T phase of tantalum disulfide (1T-TaS 2 ) possesses a variety of charge-density-wave (CDW) orders, and as a result, it attracts an increasing amount of academic and technological interest. The 1T phase of tantalum disulfide (1T-TaS 2 ) possesses a variety of charge-density-wave (CDW) orders, and as a result, it attracts an increasing amount of academic and technological interest. Researchers have devoted tremendous efforts towards understanding the impacts of doping, alloying, intercalation or other triggering agents on its charge density wave orders. In this work, we demonstrate that incorporating potassium chloride (KCl) during chemical vapor deposition (CVD) of TaS 2 can control the phase (1T, 2H or metal nanowires) via the intercalation of potassium ions (K + ) between TaS 2 layers. Finally, we demonstrate that K + not only impacts the structure during synthesis but also strongly impacts the CDW phase transition as a function of temperature, increasing the nearly commensurate (NCCDW) to commensurate (CCDW) transition to just below room temperature.

Attributes

Attribute NameValues
Creator
  • R. Zhao

  • B. Grisafe

  • R. K. Ghosh

  • K. Wang

  • S. Datta

  • J. Robinson

Journal or Work Title
  • Royal Society of Chemistry

Volume
  • 11

First Page
  • 6016

Last Page
  • 6022

ISSN
  • 20403372

Publication Date
  • 2019-03

Subject
  • Magellan SEM

  • Titan TEM

Publisher
  • Royal Society of Chemistry

Date Created
  • 2019-08-15

Language
  • English

Departments and Units
Record Visibility Public
Content License
  • All rights reserved

Digital Object Identifier

doi:10.1039/c8nr09732a

This DOI is the best way to cite this article.