Vapour phase growth and grain boundary structure of molybdenum disulphide atomic layers View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2013-08

AUTHORS

Sina Najmaei, Zheng Liu, Wu Zhou, Xiaolong Zou, Gang Shi, Sidong Lei, Boris I. Yakobson, Juan-Carlos Idrobo, Pulickel M. Ajayan, Jun Lou

ABSTRACT

Single-layered molybdenum disulphide with a direct bandgap is a promising two-dimensional material that goes beyond graphene for the next generation of nanoelectronics. Here, we report the controlled vapour phase synthesis of molybdenum disulphide atomic layers and elucidate a fundamental mechanism for the nucleation, growth, and grain boundary formation in its crystalline monolayers. Furthermore, a nucleation-controlled strategy is established to systematically promote the formation of large-area, single- and few-layered films. Using high-resolution electron microscopy imaging, the atomic structure and morphology of the grains and their boundaries in the polycrystalline molybdenum disulphide atomic layers are examined, and the primary mechanisms for grain boundary formation are evaluated. Grain boundaries consisting of 5- and 7- member rings are directly observed with atomic resolution, and their energy landscape is investigated via first-principles calculations. The uniformity in thickness, large grain sizes, and excellent electrical performance signify the high quality and scalable synthesis of the molybdenum disulphide atomic layers. More... »

PAGES

754

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/nmat3673

DOI

http://dx.doi.org/10.1038/nmat3673

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1040210542

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/23749265


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