Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials
Due to the attractive optical and electrical properties, van der Waals (vdWs) heterostructures constructed from the different two-dimensional materials have received widespread attention. Here, MoS<sub>2</sub>/h-BN, MoS<sub>2</sub>/graphene, WS<sub>2</sub>/h-BN, a...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/22/3/1246 |
| _version_ | 1797406787826089984 |
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| author | Tao Han Hongxia Liu Shulong Wang Shupeng Chen Kun Yang Zhandong Li |
| author_facet | Tao Han Hongxia Liu Shulong Wang Shupeng Chen Kun Yang Zhandong Li |
| author_sort | Tao Han |
| collection | DOAJ |
| description | Due to the attractive optical and electrical properties, van der Waals (vdWs) heterostructures constructed from the different two-dimensional materials have received widespread attention. Here, MoS<sub>2</sub>/h-BN, MoS<sub>2</sub>/graphene, WS<sub>2</sub>/h-BN, and WS<sub>2</sub>/graphene vdWs heterostructures are successfully prepared by the CVD and wet transfer methods. The distribution, Raman and photoluminescence (PL) spectra of the above prepared heterostructure samples can be respectively observed and tested by optical microscopy and Raman spectrometry, which can be used to study their growth mechanisms and optical properties. Meanwhile, the uniformity and composition distribution of heterostructure films can also be analyzed by the Raman and PL spectra. The internal mechanism of Raman and PL spectral changes can be explained by comparing and analyzing the PL and Raman spectra of the junction and non-junction regions between 2D-2D vdWs heterostructure materials, and the effect of laser power on the optical properties of heterostructure materials can also be analyzed. These heterostructure materials exhibit novel and unique optical characteristics at the stacking or junction, which can provide a reliable experimental basis for the preparation of suitable TMDs heterostructure materials with excellent performance. |
| first_indexed | 2024-03-09T03:31:41Z |
| format | Article |
| id | doaj.art-a1a4ac2f662d405caa8a50046138252a |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T03:31:41Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-a1a4ac2f662d405caa8a50046138252a2023-12-03T14:55:23ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-01-01223124610.3390/ijms22031246Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure MaterialsTao Han0Hongxia Liu1Shulong Wang2Shupeng Chen3Kun Yang4Zhandong Li5Key Laboratory for Wide-Band Gap Semiconductor Materials and Devices of Education, The School of Microelectronics, Xidian University, Xi’an 710071, ChinaKey Laboratory for Wide-Band Gap Semiconductor Materials and Devices of Education, The School of Microelectronics, Xidian University, Xi’an 710071, ChinaKey Laboratory for Wide-Band Gap Semiconductor Materials and Devices of Education, The School of Microelectronics, Xidian University, Xi’an 710071, ChinaKey Laboratory for Wide-Band Gap Semiconductor Materials and Devices of Education, The School of Microelectronics, Xidian University, Xi’an 710071, ChinaKey Laboratory for Wide-Band Gap Semiconductor Materials and Devices of Education, The School of Microelectronics, Xidian University, Xi’an 710071, ChinaKey Laboratory for Wide-Band Gap Semiconductor Materials and Devices of Education, The School of Microelectronics, Xidian University, Xi’an 710071, ChinaDue to the attractive optical and electrical properties, van der Waals (vdWs) heterostructures constructed from the different two-dimensional materials have received widespread attention. Here, MoS<sub>2</sub>/h-BN, MoS<sub>2</sub>/graphene, WS<sub>2</sub>/h-BN, and WS<sub>2</sub>/graphene vdWs heterostructures are successfully prepared by the CVD and wet transfer methods. The distribution, Raman and photoluminescence (PL) spectra of the above prepared heterostructure samples can be respectively observed and tested by optical microscopy and Raman spectrometry, which can be used to study their growth mechanisms and optical properties. Meanwhile, the uniformity and composition distribution of heterostructure films can also be analyzed by the Raman and PL spectra. The internal mechanism of Raman and PL spectral changes can be explained by comparing and analyzing the PL and Raman spectra of the junction and non-junction regions between 2D-2D vdWs heterostructure materials, and the effect of laser power on the optical properties of heterostructure materials can also be analyzed. These heterostructure materials exhibit novel and unique optical characteristics at the stacking or junction, which can provide a reliable experimental basis for the preparation of suitable TMDs heterostructure materials with excellent performance.https://www.mdpi.com/1422-0067/22/3/1246vdWs heterostructureRaman spectrumPL spectrum |
| spellingShingle | Tao Han Hongxia Liu Shulong Wang Shupeng Chen Kun Yang Zhandong Li Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials International Journal of Molecular Sciences vdWs heterostructure Raman spectrum PL spectrum |
| title | Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials |
| title_full | Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials |
| title_fullStr | Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials |
| title_full_unstemmed | Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials |
| title_short | Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials |
| title_sort | synthesis and spectral characteristics investigation of the 2d 2d vdws heterostructure materials |
| topic | vdWs heterostructure Raman spectrum PL spectrum |
| url | https://www.mdpi.com/1422-0067/22/3/1246 |
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