A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials
Magnetic two-dimensional (2D) materials have garnered significant attention for their potential to revolutionize 2D spintronics due to their unique magnetic properties. However, their air-sensitivity and highly insulating nature of the magnetic semiconductors present substantial challenges for devic...
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2024-11-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/15/11/1401 |
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| author | Kunlin Yang Guorui Zhao Yibin Zhao Jie Xiao Le Wang Jiaqi Liu Wenqing Song Qing Lan Tuoyu Zhao Hai Huang Jia-Wei Mei Wu Shi |
| author_facet | Kunlin Yang Guorui Zhao Yibin Zhao Jie Xiao Le Wang Jiaqi Liu Wenqing Song Qing Lan Tuoyu Zhao Hai Huang Jia-Wei Mei Wu Shi |
| author_sort | Kunlin Yang |
| collection | DOAJ |
| description | Magnetic two-dimensional (2D) materials have garnered significant attention for their potential to revolutionize 2D spintronics due to their unique magnetic properties. However, their air-sensitivity and highly insulating nature of the magnetic semiconductors present substantial challenges for device fabrication with effective contacts. In this study, we introduce a polycarbonate (PC)-assisted transfer method that effectively forms van der Waals (vdW) contacts with 2D materials, streamlining the fabrication process without the need for additional lithography. This method is particularly advantageous for air-sensitive magnetic materials, as demonstrated in Fe<sub>3</sub>GeTe<sub>2</sub>. It also ensures excellent interface contact quality and preserves the intrinsic magnetic properties in magnetic semiconductors like CrSBr. Remarkably, this method achieves a contact resistance four orders of magnitude lower than that achieved with traditional thermally evaporated electrodes in thin-layer CrSBr devices and enables the observation of sharp magnetic transitions similar to those observed with graphene vdW contacts. Compatible with standard dry-transfer processes and scalable to large wafer sizes, our approach provides a straightforward and effective solution for developing complex magnetic heterojunction devices and expanding the applications of magnetic 2D materials. |
| format | Article |
| id | doaj-art-af2f497c49eb45ca85ac767a9edef14f |
| institution | DOAJ |
| issn | 2072-666X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj-art-af2f497c49eb45ca85ac767a9edef14f2025-08-20T02:48:06ZengMDPI AGMicromachines2072-666X2024-11-011511140110.3390/mi15111401A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional MaterialsKunlin Yang0Guorui Zhao1Yibin Zhao2Jie Xiao3Le Wang4Jiaqi Liu5Wenqing Song6Qing Lan7Tuoyu Zhao8Hai Huang9Jia-Wei Mei10Wu Shi11State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaState Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaState Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaDepartment of Physics, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Physics, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Physics, Southern University of Science and Technology, Shenzhen 518055, ChinaState Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaState Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaState Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaShanghai Frontiers Science Research Base of Intelligent Optoelectronic and Perception, Institute of Optoelectronic and Department of Material Science, Fudan University, Shanghai 200433, ChinaDepartment of Physics, Southern University of Science and Technology, Shenzhen 518055, ChinaState Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing, Fudan University, Shanghai 200433, ChinaMagnetic two-dimensional (2D) materials have garnered significant attention for their potential to revolutionize 2D spintronics due to their unique magnetic properties. However, their air-sensitivity and highly insulating nature of the magnetic semiconductors present substantial challenges for device fabrication with effective contacts. In this study, we introduce a polycarbonate (PC)-assisted transfer method that effectively forms van der Waals (vdW) contacts with 2D materials, streamlining the fabrication process without the need for additional lithography. This method is particularly advantageous for air-sensitive magnetic materials, as demonstrated in Fe<sub>3</sub>GeTe<sub>2</sub>. It also ensures excellent interface contact quality and preserves the intrinsic magnetic properties in magnetic semiconductors like CrSBr. Remarkably, this method achieves a contact resistance four orders of magnitude lower than that achieved with traditional thermally evaporated electrodes in thin-layer CrSBr devices and enables the observation of sharp magnetic transitions similar to those observed with graphene vdW contacts. Compatible with standard dry-transfer processes and scalable to large wafer sizes, our approach provides a straightforward and effective solution for developing complex magnetic heterojunction devices and expanding the applications of magnetic 2D materials.https://www.mdpi.com/2072-666X/15/11/1401van der Waals contactsdry-transfer methodmagnetic 2D materialsspintronics |
| spellingShingle | Kunlin Yang Guorui Zhao Yibin Zhao Jie Xiao Le Wang Jiaqi Liu Wenqing Song Qing Lan Tuoyu Zhao Hai Huang Jia-Wei Mei Wu Shi A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials Micromachines van der Waals contacts dry-transfer method magnetic 2D materials spintronics |
| title | A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials |
| title_full | A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials |
| title_fullStr | A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials |
| title_full_unstemmed | A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials |
| title_short | A Polycarbonate-Assisted Transfer Method for van der Waals Contacts to Magnetic Two-Dimensional Materials |
| title_sort | polycarbonate assisted transfer method for van der waals contacts to magnetic two dimensional materials |
| topic | van der Waals contacts dry-transfer method magnetic 2D materials spintronics |
| url | https://www.mdpi.com/2072-666X/15/11/1401 |
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