Properties of individual dopant atoms in single-layer MoS2: atomic structure, migration, and enhanced reactivity.
basic_science · Level V
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- Record sourced from PubMed, PMID 24677145.
- Also identified by DOI 10.1002/adma.201304985.
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Abstract
Single-layered MoS2 doped with Re (n-type) and Au (p-type) are investigated by in situ scanning transmission electron microscopy. Re atoms substituting Mo sites enhance the local chemical affinity, evidenced by agglomeration of other dopant/impurity atoms. Au atoms exist as adatoms and show larger mobility under the electron beam. These behaviors are consistent with density functional theory calculations.