Electronic-dimensionality reduction of bulk MoS 2 by hydrogen treatment

A reduction in the electronic-dimensionality of materials is one method for achieving improvements in material properties. Here, a reduction in electronic-dimensionality is demonstrated using a simple hydrogen treatment technique. Quantum well states from hydrogen-treated bulk 2H-MoS2 are observed u...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2018-09, Vol.20 (35), p.23007-23012
Main Authors: Cho, Soohyun, Kim, Beom Seo, Kim, Beomyoung, Kyung, Wonshik, Seo, Jeongjin, Park, Min, Jeon, Jun Woo, Tanaka, Kiyohisa, Denlinger, Jonathan D, Kim, Changyoung, Odkhuu, Dorj, Kim, Byung Hoon, Park, Seung Ryong
Format: Article
Language:English
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Summary:A reduction in the electronic-dimensionality of materials is one method for achieving improvements in material properties. Here, a reduction in electronic-dimensionality is demonstrated using a simple hydrogen treatment technique. Quantum well states from hydrogen-treated bulk 2H-MoS2 are observed using angle resolved photoemission spectroscopy (ARPES). The electronic states are confined within a few MoS2 layers after the hydrogen treatment. A significant reduction in the band-gap can also be achieved after the hydrogen treatment, and both phenomena can be explained by the formation of sulfur vacancies generated by the chemical reaction between sulfur and hydrogen.
ISSN:1463-9076
1463-9084
DOI:10.1039/C8CP02365D