Universal mechanical exfoliation of large-area 2D crystals
Songshan Lake Materials Laboratory · Institute of Physics · +9 more institutions
Abstract
Two-dimensional materials provide extraordinary opportunities for exploring phenomena arising in atomically thin crystals. Beginning with the first isolation of graphene, mechanical exfoliation has been a key to provide high-quality two-dimensional materials, but despite improvements it is still limited in yield, lateral size and contamination. Here we introduce a contamination-free, one-step and universal Au-assisted mechanical exfoliation method and demonstrate its effectiveness by isolating 40 types of single-crystalline monolayers, including elemental two-dimensional crystals, metal-dichalcogenides, magnets and superconductors. Most of them are of millimeter-size and high-quality, as shown by transfer-free…
Citation impact
- FWCI
- 33.15
- Percentile
- 100%
- References
- 67
Authors
31Topics & keywords
- Exfoliation joint
- Monolayer
- Materials science
- Graphene
- Yield (engineering)
- Nanotechnology
- Heterojunction
- Quantum tunnelling
Funding
- UDU.S. Department of EnergyAward: DE-SC0016343
- NNNational Natural Science Foundation of ChinaAwards: Y18G06, 61725107, 11622437, XDB30000000, 11974422, 61674171, 2018013, 2015CB921300, 61971035, 2017013, 11874405, 2019007, 2018YFE0202700, XDB25000000, 2019YFA0308000
- CAChinese Academy of SciencesAwards: XDB30000000, 2019007, 2019YFA0308000, XDB25000000, Grant No. XDB25000000, Y18G06, 11874405, 2017013, No. XDB25000000
- RURenmin University of China
- OOOffice of ScienceAward: DE-SC0016343
- NKNational Key Research and Development Program of ChinaAwards: XDB25000000, XDB30000000, 2017013, 2018YFA0305800, 2015CB921300, 2019007, 2018YFE0202700, 11874405, 2018YFA0704201, 2018013, Y18G06
- YIYouth Innovation Promotion AssociationAwards: 2017013, 2019007, 2018013
- BEBasic Energy SciencesAwards: SC0016343, DE-SC0016343