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Title: The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment
Authors: Meng, Jian-Ling
Zhu, Jian-Qi
Jia, Shun-Tian
Ren, Xiao
Keywords: Engineering::Materials
Issue Date: 2020
Source: Meng, J., Zhu, J., Jia, S. & Ren, X. (2020). The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment. Medziagotyra, 26(2), 143-146.
Journal: Medziagotyra
Abstract: By strong oxygen plasma treatment on monolayer MoS2, we observe the disappearance of the Raman modes of MoS2. We propose the hypothesis that the state of MoS2 translates from crystal to amorphous after strong oxygen plasma treatment. The evidences of no MoO3 formation shown by Raman spectra and the appearance of the Mo6+ peak and decreased O concentration shown by X-ray photoelectron spectroscopy support our hypothesis. The amorphization of monolayer MoS2 is further confirmed by the quenching of photoluminescence (PL) and the disappearance of two absorption peaks related to A, B exciton which demonstrates the disordered bandgap. Finally, we found that the amorphous MoS2 can improve the absorption fraction at the visible light (500~ 750 nm) which is potential for future visible light photocatalysis.
ISSN: 1392-1320
DOI: 10.5755/
Rights: © 2020 The Author(s). The copyrights for articles in this journal are retained by the author(s), with first publication rights granted to the journal. By virtue of their appearance in this open-access journal, articles are free to use with proper attribution in educational and other non-commercial settings.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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