Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes
10.1038/ncomms12206
Crossref journal-article
Springer Science and Business Media LLC
Nature Communications (297)
Abstract

AbstractA microscopic understanding of the growth mechanism of two-dimensional materials is of particular importance for controllable synthesis of functional nanostructures. Because of the lack of direct and insightful observations, how to control the orientation and the size of two-dimensional material grains is still under debate. Here we discern distinct formation stages for MoS2 flakes from the thermolysis of ammonium thiomolybdates using in situ transmission electron microscopy. In the initial stage (400 °C), vertically aligned MoS2 structures grow in a layer-by-layer mode. With the increasing temperature of up to 780 °C, the orientation of MoS2 structures becomes horizontal. When the growth temperature reaches 850 °C, the crystalline size of MoS2 increases by merging adjacent flakes. Our study shows direct observations of MoS2 growth as the temperature evolves, and sheds light on the controllable orientation and grain size of two-dimensional materials.

Bibliography

Fei, L., Lei, S., Zhang, W.-B., Lu, W., Lin, Z., Lam, C. H., Chai, Y., & Wang, Y. (2016). Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes. Nature Communications, 7(1).

Authors 8
  1. Linfeng Fei (first)
  2. Shuijin Lei (additional)
  3. Wei-Bing Zhang (additional)
  4. Wei Lu (additional)
  5. Ziyuan Lin (additional)
  6. Chi Hang Lam (additional)
  7. Yang Chai (additional)
  8. Yu Wang (additional)
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Dates
Type When
Created 9 years, 1 month ago (July 14, 2016, 8:06 a.m.)
Deposited 2 years, 7 months ago (Jan. 4, 2023, 6:11 a.m.)
Indexed 2 weeks, 1 day ago (Aug. 7, 2025, 5:03 a.m.)
Issued 9 years, 1 month ago (July 14, 2016)
Published 9 years, 1 month ago (July 14, 2016)
Published Online 9 years, 1 month ago (July 14, 2016)
Funders 0

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@article{Fei_2016, title={Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes}, volume={7}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/ncomms12206}, DOI={10.1038/ncomms12206}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Fei, Linfeng and Lei, Shuijin and Zhang, Wei-Bing and Lu, Wei and Lin, Ziyuan and Lam, Chi Hang and Chai, Yang and Wang, Yu}, year={2016}, month=jul }