Discipline: Nanoscience
Subcategory: Materials Science
Session: 3
Deeksha Sharma - Pennsylvania State University
Co-Author(s): Shruti Subramanian, Pennsylvania State University, State College ; Joshua Robinson, Pennsylvania State University, State College
TMDs are known to have the potential to provide fast and high-performance electricity at a microscopic level and depending on the metal intercalated into the 2D material graphene, the electronic properties may drastically change. In this case, this project hypothesizes that Gallium possesses a very low contact resistance to Molybdenum Disulfide. The purpose of this research is to study the band alignment in Gallium-intercalated Graphene contacted with Molybdenum Disulfide. A three-phase, hot zone, graphite furnace is used to synthesize epitaxial graphene, the majority of which etched away into patterns through lithography. From there gallium is intercalated into the remaining graphene and has been successfully contacted with Molybdenum Disulfide using powder vaporization, as confirmed with Raman spectroscopy and XPS. As an on-going project, the next steps are to construct devices and to use electrolytic gating to measure contact resistance.
Funder Acknowledgement(s): I would like to thank the National Science Foundation EFRI REM (EFMA-1433378 and EFMA-1433307) for funding this research project.
Faculty Advisor: Joshua Robinson, robinson@matse.psu.edu
Role: I synthesized the graphene and conducted characterization after etching and Molybdenum Disulfide contacting.