Direct imaging of dopant and impurity distributions in 2D MoS$_2$

Se-Ho Kim; Joohyun Lim; Rajib Sahu; Olga Kasian; Leigh T. Stephenson; Christina Scheu; Baptiste Gault

Direct imaging of dopant and impurity distributions in 2D MoS$_2$

Materials Science 2021-02-11 v1

Authors: Se-Ho Kim , Joohyun Lim , Rajib Sahu , Olga Kasian , Leigh T. Stephenson , Christina Scheu , Baptiste Gault

Abstract

Molybdenum disulfide (MoS $_2$ ) nanosheet is a two-dimensional material with high electron mobility and with high potential for applications in catalysis and electronics. We synthesized MoS $_2$ nanosheets using a one-pot wet-chemical synthesis route with and without Re-doping. Atom probe tomography revealed that 3.8 at.% Re is homogeneously distributed within the Re-doped sheets. Other impurities are found also integrated within the material: light elements including C, N, O, and Na, locally enriched up to 0.1 at.%, as well as heavy elements such as V and W. Analysis of the non-doped sample reveals that the W and V likely originate from the Mo precursor.

Keywords

molybdenum disulfide two-dimensional material atom probe tomography re-doping impurity distribution nanosheet

Cite

@article{arxiv.2102.05572,
  title  = {Direct imaging of dopant and impurity distributions in 2D MoS$_2$},
  author = {Se-Ho Kim and Joohyun Lim and Rajib Sahu and Olga Kasian and Leigh T. Stephenson and Christina Scheu and Baptiste Gault},
  journal= {arXiv preprint arXiv:2102.05572},
  year   = {2021}
}

Direct imaging of dopant and impurity distributions in 2D MoS$_2$

Abstract

Keywords

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