Versatile construction of van der Waals heterostructures using a dual-function polymeric film
| Autor: | William Mayer, Javad Shabani, Edoardo Cuniberto, Kenji Watanabe, Zhujun Huang, Takashi Taniguchi, Abdullah G. Alharbi, Davood Shahrjerdi |
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| Rok vydání: | 2020 |
| Předmět: |
Electron mobility
Materials science Fabrication Science Stacking General Physics and Astronomy 02 engineering and technology Substrate (electronics) Two-dimensional materials 01 natural sciences Article General Biochemistry Genetics and Molecular Biology law.invention Condensed Matter::Materials Science symbols.namesake law 0103 physical sciences lcsh:Science 010306 general physics Multidisciplinary Graphene business.industry Synthesis and processing Heterojunction General Chemistry Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Exfoliation joint symbols Optoelectronics lcsh:Q Electronic properties and devices van der Waals force 0210 nano-technology business |
| Zdroj: | Nature Communications Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020) |
| ISSN: | 2041-1723 |
| Popis: | The proliferation of van der Waals (vdW) heterostructures formed by stacking layered materials can accelerate scientific and technological advances. Here, we report a strategy for constructing vdW heterostructures through the interface engineering of the exfoliation substrate using a sub-5 nm polymeric film. Our construction method has two main features that distinguish it from existing techniques. First is the consistency of its exfoliation process in increasing the yield and in producing large (>10,000 μm2) monolayer graphene. Second is the applicability of its layer transfer process to different layered materials without requiring a specialized stamp—a feature useful for generalizing the assembly process. We demonstrate vdW graphene devices with peak carrier mobility of 200,000 and 800,000 cm2 V−1 s−1 at room temperature and 9 K, respectively. The simplicity of our construction method and its versatility to different layered materials may open doors for automating the fabrication process of vdW heterostructures. Heterostructure stacking of 2D materials is crucial for fundamental studies and device applications. Here, the authors report heterostructures based on exfoliated flakes of graphene with large lateral area sizes and record high mobility of 200,000 cm2/Vs at room temperature. |
| Databáze: | OpenAIRE |
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