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Properties of Individual Dopant Atoms in Single‐Layer MoS 2 : Atomic Structure, Migration, and Enhanced Reactivity
Author(s) -
Lin YungChang,
Dumcenco Dumitru O.,
Komsa HannuPekka,
Niimi Yoshiko,
Krasheninnikov Arkady V.,
Huang YingSheng,
Suenaga Kazu
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201304985
Subject(s) - dopant , materials science , reactivity (psychology) , density functional theory , transmission electron microscopy , doping , impurity , scanning transmission electron microscopy , chemical physics , crystallography , layer (electronics) , molecular physics , nanotechnology , computational chemistry , optoelectronics , chemistry , medicine , alternative medicine , organic chemistry , pathology
Single‐layered MoS 2 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.