Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives
A comparative study of Raman spectra excited by laser radiation λL = 632.8 nm and 488 nm of natural crystals of 2H-MoS2 and nanocrystallites MoS2 (C) containing 0.5 and 1.0 wt.% Carbon additives. A detailed numerical analysis of the shape of observed D and G bands was performed. The complication of...
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| Format: | Article |
| Language: | English |
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Vasyl Stefanyk Precarpathian National University
2020-12-01
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| Series: | Фізика і хімія твердого тіла |
| Subjects: | |
| Online Access: | https://journals.pnu.edu.ua/index.php/pcss/article/view/4333 |
| _version_ | 1818262498434875392 |
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| author | N.E. Kornienko A.P. Naumenko L.M. Kulikov |
| author_facet | N.E. Kornienko A.P. Naumenko L.M. Kulikov |
| author_sort | N.E. Kornienko |
| collection | DOAJ |
| description | A comparative study of Raman spectra excited by laser radiation λL = 632.8 nm and 488 nm of natural crystals of 2H-MoS2 and nanocrystallites MoS2 (C) containing 0.5 and 1.0 wt.% Carbon additives. A detailed numerical analysis of the shape of observed D and G bands was performed. The complication of the spectra of graphite-like and diamond-like structures with the appearance of additional spectral components at 1440-1500 cm-1 and 1230-1270 cm-1 as a result of doubling the size of the corresponding elementary quasi-cells are analyzed. It is shown that the frequencies of D-bands of diamond-like nanostructures 1297 ÷ 1302 cm-1 don’t depend on λL in contrast to the change in the frequencies of the G (k)-bands. A significant effect of 632.8 nm resonant radiation on the electronic states and properties of MoS2 (C) NC was established. The strengthening of the D bands of the diamond-like structure and the ordering of the graphite structure with increasing carbon content in MoS2 (C) nanocrystals have been established. The change of spectral positions of D, G, and G (k) bands at strengthening the degree of disordering of a diamond- and graphite-like structures is considered. The influence of laser radiation on carbon structures is discussed. |
| first_indexed | 2024-12-12T19:04:05Z |
| format | Article |
| id | doaj.art-77302bd23b7545b89444af682845bd46 |
| institution | Directory Open Access Journal |
| issn | 1729-4428 2309-8589 |
| language | English |
| last_indexed | 2024-12-12T19:04:05Z |
| publishDate | 2020-12-01 |
| publisher | Vasyl Stefanyk Precarpathian National University |
| record_format | Article |
| series | Фізика і хімія твердого тіла |
| spelling | doaj.art-77302bd23b7545b89444af682845bd462022-12-22T00:15:00ZengVasyl Stefanyk Precarpathian National UniversityФізика і хімія твердого тіла1729-44282309-85892020-12-0121459862010.15330/pcss.21.4.598-6204333Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon AdditivesN.E. Kornienko0A.P. Naumenko1L.M. Kulikov2Taras Shevchenko National University of KyivTaras Shevchenko National University of KyivI.Frantsevich Institute for Problems in Materials Science National Academy of Sciences of UkraineA comparative study of Raman spectra excited by laser radiation λL = 632.8 nm and 488 nm of natural crystals of 2H-MoS2 and nanocrystallites MoS2 (C) containing 0.5 and 1.0 wt.% Carbon additives. A detailed numerical analysis of the shape of observed D and G bands was performed. The complication of the spectra of graphite-like and diamond-like structures with the appearance of additional spectral components at 1440-1500 cm-1 and 1230-1270 cm-1 as a result of doubling the size of the corresponding elementary quasi-cells are analyzed. It is shown that the frequencies of D-bands of diamond-like nanostructures 1297 ÷ 1302 cm-1 don’t depend on λL in contrast to the change in the frequencies of the G (k)-bands. A significant effect of 632.8 nm resonant radiation on the electronic states and properties of MoS2 (C) NC was established. The strengthening of the D bands of the diamond-like structure and the ordering of the graphite structure with increasing carbon content in MoS2 (C) nanocrystals have been established. The change of spectral positions of D, G, and G (k) bands at strengthening the degree of disordering of a diamond- and graphite-like structures is considered. The influence of laser radiation on carbon structures is discussed.https://journals.pnu.edu.ua/index.php/pcss/article/view/4333mos2 nanocrystallitesmos2 natural single crystallsraman spectragraphite-like nanostructuresdiamond-like nanostructures |
| spellingShingle | N.E. Kornienko A.P. Naumenko L.M. Kulikov Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives Фізика і хімія твердого тіла mos2 nanocrystallites mos2 natural single crystalls raman spectra graphite-like nanostructures diamond-like nanostructures |
| title | Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives |
| title_full | Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives |
| title_fullStr | Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives |
| title_full_unstemmed | Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives |
| title_short | Observation of Graphite-Like and Diamond-Like Nanostructures in the Raman Spectra of Natural and Synthesized MoS2 Crystals with Small Carbon Additives |
| title_sort | observation of graphite like and diamond like nanostructures in the raman spectra of natural and synthesized mos2 crystals with small carbon additives |
| topic | mos2 nanocrystallites mos2 natural single crystalls raman spectra graphite-like nanostructures diamond-like nanostructures |
| url | https://journals.pnu.edu.ua/index.php/pcss/article/view/4333 |
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