Exciton Binding Energy of Monolayer WS2

Bairen Zhu, Xi Chen, Xiaodong Cui

Type: Article

Publication Date: 2015-03-18

Citations: 521

DOI: https://doi.org/10.1038/srep09218

Abstract

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 WS 2 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.

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