Exciton binding energy of monolayer WS₂

Sci Rep. 2015 Mar 18;5:9218. doi: 10.1038/srep09218.

Abstract

The optical properties of monolayer transition metal dichalcogenides (TMDC) feature prominent excitonic natures. Here we report an experimental approach to measuring the exciton binding energy of monolayer WS₂ with linear differential transmission spectroscopy and two-photon photoluminescence excitation spectroscopy (TP-PLE). TP-PLE measurements show the exciton binding energy of 0.71 ± 0.01 eV around K valley in the Brillouin zone.

Publication types

  • Research Support, Non-U.S. Gov't