All Dry Transfer Processes Utilizing Au Exfoliation for Predetermined Shapes of Transition Metal Dichalcogenide
Two-dimensional (2D) materials have attracted significant attention owing to their exceptional electrical and optical properties. The high-quality monolayer 2D materials are usually fabricated by mechanical exfoliation from bulk single crystals using a scotch tape method, limiting the flake size and...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1985. - 41(2025), 16 vom: 29. Apr., Seite 10099-10107 |
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| Weitere Verfasser: | , , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article |
| Zusammenfassung: | Two-dimensional (2D) materials have attracted significant attention owing to their exceptional electrical and optical properties. The high-quality monolayer 2D materials are usually fabricated by mechanical exfoliation from bulk single crystals using a scotch tape method, limiting the flake size and production yield. Extensive efforts have been made to increase the production yield and size by using an Au-assisted process, such as the modified mechanical exfoliation method. However, the wet-etching processes are inevitable in the scalable Au-assisted mechanical exfoliation method, which causes defect formation and unintentional contamination, leading to a quality decrease in the monolayer 2D material flakes. Here, we developed a Au-assisted all dry transfer method without any wet process for fabricating 2D materials and their van der Waals (vdW) heterostructures. The developed dry transfer technique using patterned Au substrates and h-BN on polymer stamps gives us a large area and designed shape of monolayer 2D materials and their vdW heterostructures with clean interfaces. It will be beneficial for building high-quality vdW heterostructures, allowing us to explore and develop more potential applications in electrical and optical devices based on monolayer 2D materials |
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| Beschreibung: | Date Revised 29.04.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/acs.langmuir.4c04629 |