Journal
ADVANCED MATERIALS
Volume 34, Issue 9, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202106922
Keywords
2D materials; CuI; graphene encapsulation; heterostructures; layered materials
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Funding
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [756277-ATMEN, 802123-HDEM]
- Austrian Science Fund (FWF) [I2344-N36]
- Slovak Research and Development Agency [APVV-16-0319, APVV-15-0693, APVV-19-0365]
- project CEMEA of the Slovak Academy of Sciences, ITMS of the Research & Innovation Operational Programme [313021T081]
- V4-Japan Joint Research Program (BGapEng)
- FWF [P31605-N36]
- European Union's Horizon 2020 research and innovation programme [101008099]
- Marie Curie Actions (MSCA) [101008099] Funding Source: Marie Curie Actions (MSCA)
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Researchers have successfully stabilized a 2D structure composed of copper and iodine at room temperature by using graphene oxide as the template material, providing a new method for producing more exotic phases of materials for experiments.
Heterostructures composed of 2D materials are already opening many new possibilities in such fields of technology as electronics and magnonics, but far more could be achieved if the number and diversity of 2D materials were increased. So far, only a few dozen 2D crystals have been extracted from materials that exhibit a layered phase in ambient conditions, omitting entirely the large number of layered materials that may exist at other temperatures and pressures. This work demonstrates how such structures can be stabilized in 2D van der Waals (vdw) stacks under room temperature via growing them directly in graphene encapsulation by using graphene oxide as the template material. Specifically, an ambient stable 2D structure of copper and iodine, a material that normally only occurs in layered form at elevated temperatures between 645 and 675 K, is produced. The results establish a simple route to the production of more exotic phases of materials that would otherwise be difficult or impossible to stabilize for experiments in ambient.
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