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Probing the interfacial interaction between monolayer molybdenum disulfide and Au nanoclusters
Author(s) -
Wang Fei,
Xu Hui,
Fang Jingyue,
Wang Guang,
Zhang Xueao
Publication year - 2017
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6233
Subject(s) - nanoclusters , x ray photoelectron spectroscopy , monolayer , molybdenum disulfide , ultraviolet photoelectron spectroscopy , raman spectroscopy , materials science , photoluminescence , ultraviolet , analytical chemistry (journal) , spectroscopy , molybdenum , nanotechnology , chemistry , photochemistry , optoelectronics , chemical engineering , physics , optics , organic chemistry , quantum mechanics , engineering , metallurgy
Coupling of plasmonic metal nanostructures on two‐dimensional materials represents one promising approach to improve their optoelectronic device performance. In this article, we systematically investigated the interfacial interactions between Au nanoclusters and monolayer molybdenum disulfide (MoS 2 ) and the effect of Au decoration on the electrical transport and optical properties of MoS 2 , through the combination of in situ MoS 2 field‐effect transistor device evaluation and in situ ultraviolet photoelectron spectroscopy and X‐ray photoelectron spectroscopy measurements. The in situ X‐ray photoelectron spectroscopy/ultraviolet photoelectron spectroscopy experiments revealed a weak interfacial coupling between Au nanoclusters and monolayer MoS 2 . The absence of strong charge transfer between Au nanoclusters and MoS 2 was further confirmed by the photoluminescence and Raman measurements. It was also found that the electron charge‐carrier concentration in monolayer MoS 2 weakly depended on the coverage of Au nanoclusters. Copyright © 2017 John Wiley & Sons, Ltd.