Direct Imaging of Dopant and Impurity Distributions in 2D MoS2
Kim SH, Lim J, Sahu R, Kasian O, Stephenson LT, Scheu C, Gault B (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 32
Article Number: 1907235
Journal Issue: 8
DOI: 10.1002/adma.201907235
Abstract
Molybdenum disulfide (MoS2) nanosheet is a two-dimensional (2D) material with high electron mobility and with high potential for applications in catalysis and electronics. MoS2 nanosheets are synthesized using a one-pot wet-chemical synthesis route with and without Re doping. Atom probe tomography reveals that 3.8 at% Re is homogeneously distributed within the Re-doped sheets. Other impurities are also found 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 nondoped sample reveals that the W and V likely originate from the Mo precursor. It is shown how wet-chemical synthesis results in an uncontrolled integration of species from the solution that can affect the material's activity. The results of this work are expected to contribute to an improved understanding of the relationships linking composition to properties of 2D transition-metal dichalcogenide materials.
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How to cite
APA:
Kim, S.-H., Lim, J., Sahu, R., Kasian, O., Stephenson, L.T., Scheu, C., & Gault, B. (2020). Direct Imaging of Dopant and Impurity Distributions in 2D MoS2. Advanced Materials, 32(8). https://doi.org/10.1002/adma.201907235
MLA:
Kim, Se-Ho, et al. "Direct Imaging of Dopant and Impurity Distributions in 2D MoS2." Advanced Materials 32.8 (2020).
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