Type
ArticleAuthors
Hong, JinhuaHu, Zhixin
Probert, Matt
Li, Kun
Lv, Danhui
Yang, Xinan
Gu, Lin
Mao, Nannan
Feng, Qingliang
Xie, Liming
Zhang, Jin
Wu, Dianzhong
Zhang, Zhiyong
Jin, Chuanhong
Ji, Wei
Zhang, Xixiang

Yuan, Jun
Zhang, Ze
KAUST Department
Advanced Nanofabrication, Imaging and Characterization Core LabImaging and Characterization Core Lab
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2015-02-19Online Publication Date
2015-02-19Print Publication Date
2015-12Permanent link to this record
http://hdl.handle.net/10754/346700
Metadata
Show full item recordAbstract
Defects usually play an important role in tailoring various properties of two-dimensional materials. Defects in two-dimensional monolayer molybdenum disulphide may be responsible for large variation of electric and optical properties. Here we present a comprehensive joint experiment-theory investigation of point defects in monolayer molybdenum disulphide prepared by mechanical exfoliation, physical and chemical vapour deposition. Defect species are systematically identified and their concentrations determined by aberration-corrected scanning transmission electron microscopy, and also studied by ab-initio calculation. Defect density up to 3.5 × 10 13 cm '2 is found and the dominant category of defects changes from sulphur vacancy in mechanical exfoliation and chemical vapour deposition samples to molybdenum antisite in physical vapour deposition samples. Influence of defects on electronic structure and charge-carrier mobility are predicted by calculation and observed by electric transport measurement. In light of these results, the growth of ultra-high-quality monolayer molybdenum disulphide appears a primary task for the community pursuing high-performance electronic devices.Citation
Exploring atomic defects in molybdenum disulphide monolayers 2015, 6:6293 Nature CommunicationsPublisher
Springer NatureJournal
Nature CommunicationsPubMed ID
25695374PubMed Central ID
PMC4346634Additional Links
http://www.nature.com/doifinder/10.1038/ncomms7293ae974a485f413a2113503eed53cd6c53
10.1038/ncomms7293
Scopus Count
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