Barre 12-22 – 4e étage – pièce 426
Matthew Panthani – Iowa state university
Abstract
We present our recent developments in synthesizing 2D Group IV nanomaterials – atomically thin nanosheets comprised of Si, Ge, and Sn (and their alloys) – that have optical properties that can be tuned by modifying their composition, size, and surface chemistry. Using temperature-dependent spectroscopy, we show evidence of direct bandgap transitions, corroborated by electronic band structure simulations. Finally, we explore these materials’ novel defect chemistry and phase behavior and show potential implications for application areas such as computing, sensing, telecommunications, and quantum information science.
