Optical Study of the Topological Semimetal Bi4Se3
Quantum confinement of the topological semimetal Bi4Se3 was observed as a giant enhancement of the optical bandgap in two characteristic length-reducing regimes: ultra-thin films and nanoplatelets. The films were prepared via DC magnetron sputtering and characterized using atomic force microscopy and ultraviolet-visible spectroscopy. Current work investigates correlations of reduced dimensionality to enhancements of the bandgap. By characterizing the dimensionality through microscopy, spectroscopy results can be mapped to changes in the band edge as determined through Tauc plots.
Primary Advisor's Department
Stander Symposium project, College of Arts and Sciences
"Optical Study of the Topological Semimetal Bi4Se3" (2022). Stander Symposium Projects. 2545.