February 2024 - Professor Talat S. Rahman

New Publication: Anomalous isotope effect on the optical bandgap in a monolayer transition metal dichalcogenide semiconductor

May 2, 2024February 21, 2024 by Eric Switzer

Scientific collage displaying mos2 monolayer characterization: optical image (a), raman spectra graph (b), photoluminescence mapping (c-f) with silicon and molybdenum distributions.

The accepted manuscript, which includes authors Volodymyr Turkowski, Naseem U. Din (former group member), and Talat S. Rahman, has been published in Science Advances. Read the publication here: https://doi.org/10.1126/sciadv.adj0758.

Anomalous isotope effect on the optical bandgap in a monolayer transition metal dichalcogenide semiconductor

May 2, 2024February 21, 2024 by Eric Switzer

Isotope effects have received increasing attention in materials science and engineering because altering isotopes directly affects phonons, which can affect both thermal properties and optoelectronic properties of conventional semiconductors. However, how isotopic mass affects the optoelectronic properties in 2D semiconductors remains unclear because of measurement uncertainties resulting from sample heterogeneities. Here, we report an anomalous … Read more