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Molybdenum disulfide is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is MoS
2.
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Molybdenum diselenide is an inorganic compound of molybdenum and selenium. Its structure is similar to that of MoS
2. Compounds of this category are known as transition metal dichalcogenides, abbreviated TMDCs. These compounds, as the name suggests, are made up of a transition metals and elements of group 16 on the periodic table of the elements. Compared to MoS
2, MoSe
2 exhibits higher electrical conductivity.
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Transition-metal dichalcogenide (TMD or TMDC) monolayers are atomically thin semiconductors of the type MX2, with M a transition-metal atom (Mo, W, etc.) and X a chalcogen atom (S, Se, or Te). One layer of M atoms is sandwiched between two layers of X atoms. They are part of the large family of so-called 2D materials, named so to emphasize their extraordinary thinness. For example, a MoS2 monolayer is only 6.5 Å thick. The key feature of these materials is the interaction of large atoms in the 2D structure as compared with first-row transition-metal dichalcogenides, e.g., WTe2 exhibits anomalous giant magnetoresistance and superconductivity.
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References
- 1 2 "About Latha". Venkataraman Group.
- ↑ Venkataraman, Latha (January 1, 1999). "Electronic properties of one-dimensional conductors: A study of molybdenum selenide molecular wires". Bibcode:1999PhDT........65V – via NASA ADS.
- ↑ "Latha Venkataraman CV" (PDF). www.columbia.edu. 2021.
- ↑ "Venkataraman Named Gussman Professor of Applied Physics Chair". October 9, 2019.
- ↑ "Venkataraman, Latha". The David and Lucile Packard Foundation.
- ↑ "APS Fellow Archive". www.aps.org.
