Many two-dimensional materials are currently being investigated for their unique properties which can undergo dramatic changes as the they approach atomic thicknesses. Many of the most popular 2D materials being studied are elemental or binary compounds like graphene, germanene and transition metal dichalcogenides. Our research focuses on more complex metal oxychlorides which form robust two-dimensional metal oxide sheets separated by halide van der Waals regions. These metal oxychlorides have a variety of physical and electronic properties that can be modified using simple intercalation chemistry. In this study, we have intercalated WO2Cl2 with Li, Na, K, Rb, and Cs and have found several interesting materials and dramatic changes in their optical and electronic properties. We have carried out 4-point resistivity measurements, absorption and Raman spectroscopy, XRD, XPS, SEM, and TEM on these materials to better understand the modifications that are possible through the intercalation reactions. In addition, by studying the underlying intercalation reactions, we can improve our knowledge of the reaction kinetics and the limiting factors in these reactions which will lead to novel materials with a broader range of intercalation species.<br/>

Intercalation chemistry of two dimensional metal oxychlorides: Using alkali metals to modify the electronic and optical properties

ACS Fall 2020 Virtual Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.