The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment
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...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/148712 |
| _version_ | 1826120436829650944 |
|---|---|
| author | Meng, Jian-Ling Zhu, Jian-Qi Jia, Shun-Tian Ren, Xiao |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Meng, Jian-Ling Zhu, Jian-Qi Jia, Shun-Tian Ren, Xiao |
| author_sort | Meng, Jian-Ling |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T05:16:26Z |
| format | Journal Article |
| id | ntu-10356/148712 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:16:26Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1487122023-07-14T16:02:10Z The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment Meng, Jian-Ling Zhu, Jian-Qi Jia, Shun-Tian Ren, Xiao School of Materials Science and Engineering Engineering::Materials MoS2 Amorphization 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. Published version 2021-05-17T03:19:36Z 2021-05-17T03:19:36Z 2020 Journal Article 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. https://dx.doi.org/10.5755/j01.ms.26.2.21576 1392-1320 https://hdl.handle.net/10356/148712 10.5755/j01.ms.26.2.21576 2-s2.0-85078967519 2 26 143 146 en Medziagotyra © 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. application/pdf |
| spellingShingle | Engineering::Materials MoS2 Amorphization Meng, Jian-Ling Zhu, Jian-Qi Jia, Shun-Tian Ren, Xiao The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment |
| title | The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment |
| title_full | The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment |
| title_fullStr | The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment |
| title_full_unstemmed | The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment |
| title_short | The amorphization of monolayer MoS2 induced by strong oxygen plasma treatment |
| title_sort | amorphization of monolayer mos2 induced by strong oxygen plasma treatment |
| topic | Engineering::Materials MoS2 Amorphization |
| url | https://hdl.handle.net/10356/148712 |
| work_keys_str_mv | AT mengjianling theamorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT zhujianqi theamorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT jiashuntian theamorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT renxiao theamorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT mengjianling amorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT zhujianqi amorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT jiashuntian amorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment AT renxiao amorphizationofmonolayermos2inducedbystrongoxygenplasmatreatment |