Scientific Achievement
Synthesizing new 2D heterolayered structures by vertically stacking chemically different layers is highly desirable, especially when looking for unconventional superconductors. It is, however, very challenging to rationally target the heterostructures and design the synthesis because the synthesis science in this area has been underdeveloped. We developed a strategy for heterolayered oxychalcogenides by the solution chemistry utilizing molten hydroxides as a key variable to control building blocks of heterolayers.
Significance and Impact
- Highly efficient methodology for rapid discovery because of only two determining synthetic parameters (basicity and temperature).
- Universal crystal growth scheme providing a broad approach for targeting or even designing novel structures.
- Expected to accelerate the development of novel materials, especially for heterolayered compounds and facilitate the identification of superconducting materials.
Research Details
- Synthesized over 30 different combinations, including 15 new heterolayered Cu or Ag-based oxychalcogenides, proving the general scope of the new methodology.
- In situ panoramic synthesis revealed reaction paths and mechanisms.
- Developed a diffusion-drive generic crystal growth scheme for heterolayers.
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