Defect-assisted reversible phase transition in mono- and few-layer ReS2
Abstract 2D transition metal dichalcogenide (TMD) materials have attracted interest due to their remarkable excitonic, optical, electrical, and mechanical properties, which are dependent on their crystal structure. Consequently, controlling the crystal structure of these materials is essential for f...
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| Format: | Article |
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Nature Portfolio
2025-01-01
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| Series: | npj 2D Materials and Applications |
| Online Access: | https://doi.org/10.1038/s41699-025-00524-w |
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| author | George Zograf Andrew B. Yankovich Betül Küçüköz Abhay V. Agrawal Alexander Yu. Polyakov Joachim Ciers Fredrik Eriksson Åsa Haglund Paul Erhart Tomasz J. Antosiewicz Eva Olsson Timur O. Shegai |
| author_facet | George Zograf Andrew B. Yankovich Betül Küçüköz Abhay V. Agrawal Alexander Yu. Polyakov Joachim Ciers Fredrik Eriksson Åsa Haglund Paul Erhart Tomasz J. Antosiewicz Eva Olsson Timur O. Shegai |
| author_sort | George Zograf |
| collection | DOAJ |
| description | Abstract 2D transition metal dichalcogenide (TMD) materials have attracted interest due to their remarkable excitonic, optical, electrical, and mechanical properties, which are dependent on their crystal structure. Consequently, controlling the crystal structure of these materials is essential for fine-tuning their performance, e.g., linear and nonlinear optical, as well as charge transport properties. While various phase-switching TMD materials are available, their transitions are often irreversible. Here, we investigate the mechanism of a light-induced reversible phase transition in mono- and bilayer rhenium disulfide (ReS2). Our observations, based on transmission electron microscopy, nonlinear spectroscopy, and density functional theory, reveal a transition from the ground $${\rm{T}}^{\prime\prime}$$ T ″ (double-distorted T) to the metastable $${\rm{H}}^{\prime}$$ H ′ (distorted H) phase under femtosecond laser irradiation or influence of highly-energetic electrons. We show that the formation of sulfur vacancies facilitates this phenomenon. Our findings pave the way toward manipulating the crystal structure of ReS2 and possibly its heterostructures. |
| format | Article |
| id | doaj-art-ee33dd8c65bd41f9b8fdaac75b5b9aea |
| institution | Kabale University |
| issn | 2397-7132 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj 2D Materials and Applications |
| spelling | doaj-art-ee33dd8c65bd41f9b8fdaac75b5b9aea2025-01-19T12:25:39ZengNature Portfolionpj 2D Materials and Applications2397-71322025-01-019111210.1038/s41699-025-00524-wDefect-assisted reversible phase transition in mono- and few-layer ReS2George Zograf0Andrew B. Yankovich1Betül Küçüköz2Abhay V. Agrawal3Alexander Yu. Polyakov4Joachim Ciers5Fredrik Eriksson6Åsa Haglund7Paul Erhart8Tomasz J. Antosiewicz9Eva Olsson10Timur O. Shegai11Department of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Microtechnology and Nanoscience, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Microtechnology and Nanoscience, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyDepartment of Physics, Chalmers University of TechnologyAbstract 2D transition metal dichalcogenide (TMD) materials have attracted interest due to their remarkable excitonic, optical, electrical, and mechanical properties, which are dependent on their crystal structure. Consequently, controlling the crystal structure of these materials is essential for fine-tuning their performance, e.g., linear and nonlinear optical, as well as charge transport properties. While various phase-switching TMD materials are available, their transitions are often irreversible. Here, we investigate the mechanism of a light-induced reversible phase transition in mono- and bilayer rhenium disulfide (ReS2). Our observations, based on transmission electron microscopy, nonlinear spectroscopy, and density functional theory, reveal a transition from the ground $${\rm{T}}^{\prime\prime}$$ T ″ (double-distorted T) to the metastable $${\rm{H}}^{\prime}$$ H ′ (distorted H) phase under femtosecond laser irradiation or influence of highly-energetic electrons. We show that the formation of sulfur vacancies facilitates this phenomenon. Our findings pave the way toward manipulating the crystal structure of ReS2 and possibly its heterostructures.https://doi.org/10.1038/s41699-025-00524-w |
| spellingShingle | George Zograf Andrew B. Yankovich Betül Küçüköz Abhay V. Agrawal Alexander Yu. Polyakov Joachim Ciers Fredrik Eriksson Åsa Haglund Paul Erhart Tomasz J. Antosiewicz Eva Olsson Timur O. Shegai Defect-assisted reversible phase transition in mono- and few-layer ReS2 npj 2D Materials and Applications |
| title | Defect-assisted reversible phase transition in mono- and few-layer ReS2 |
| title_full | Defect-assisted reversible phase transition in mono- and few-layer ReS2 |
| title_fullStr | Defect-assisted reversible phase transition in mono- and few-layer ReS2 |
| title_full_unstemmed | Defect-assisted reversible phase transition in mono- and few-layer ReS2 |
| title_short | Defect-assisted reversible phase transition in mono- and few-layer ReS2 |
| title_sort | defect assisted reversible phase transition in mono and few layer res2 |
| url | https://doi.org/10.1038/s41699-025-00524-w |
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