| Autor: |
Jalouli, Alireza, Kilinc, Muhammed, Marga, Austin, Bian, Mengying, Thomay, Tim, Petrou, Athos, Zeng, Hao |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 4/7/2022, Vol. 156 Issue 13, p1-7, 7p |
| Abstrakt: |
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] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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