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Transition metal dichalcogenide graded alloy monolayers by chemical vapor deposition and comparison to 2D Ising model.
- Source :
-
Journal of Chemical Physics . 4/7/2022, Vol. 156 Issue 13, p1-7. 7p. - Publication Year :
- 2022
-
Abstract
- In this work, a chemical vapor deposition (CVD) method was developed for the synthesis of transition metal dichalcogenide alloy monolayers, with a composition gradient in the radial direction. The composition gradient was achieved by controlling the substrate cooling rate during the CVD growth. The two types of alloys, namely, WS2(1−x)Se2x and MoS2(1−x)Se2x, were found to exhibit an opposite composition gradient. This is attributed to their different cohesive energies. A two-dimensional Ising model is used to explain the growth mechanism, where two ends of the composition were modeled as a magnetically ordered phase and a paramagnetic phase. The composition as a function of substrate temperature is then represented by the thermal magnetization curve. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 156
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 156224852
- Full Text :
- https://doi.org/10.1063/5.0081929