We demonstrate continuous tuning of the exciton binding energy in monolayer WS2 by means of an externally applied voltage in a field-effect transistor device. Using optical spectroscopy, we monitor the ground an
T. Measurement of High Exciton Binding Energy in the Monolayer Transition-Metal Dichalcogenides WS2 and WSe2. Solid State Commun. 2015, 203, 16-20.A.T.Hanbicki, M.Currie, G.Kioseoglou, A.L.Friedman, B.T.Jonker; "Measurement of high exciton binding energy in the monolayer transition ...
& Cui, X. Exciton binding energy of monolayer WS2. Sci. Rep. 5, 9218 (2015). 25. Ugeda, M. M. et al. Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor. Nat. Mater. 13, 1091–1095 (2014). 26. Wang, G. et...
The CW laser excitation centered at 2.0 eV (620 nm) with a power of 100 µW was used to obtain the PL spectra shown in Fig. 2a, b. This excitation photon energy is large enough to excite A excitons in both monolayer MoSe2 (1.548 eV) and WS2 (1.979 eV). The PL ...
Li et al. [45] reported that the exciton binding energy of monolayer triangular WS2 decreases with the increase of defect density. In the RRS measurements, they found the defect-mediated binding energy variation of the excitons greatly increases the phonon intensity of WS2. Based on these ...
& Cui, X. Exciton binding energy of monolayer WS2. Sci. Rep. 5, 9218 (2015). 25. Ugeda, M. M. et al. Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor. Nat. Mater. 13, 1091–1095 (2014). 26. Wang, G. et...
et al. Exciton binding energy and nonhydrogenic rydberg series in monolayer WS2. Phys. Rev. Lett. 113, 076802 (2014). 5. Zhu, B., Chen, X. & Cui, X. Exciton binding energy of monolayer WS2. Sci. Rep. 5, 9218 (2015). 6. Liu, C. H. et al. Trion-induced negative ...
However, it is unclear how the unique valley degree of freedom combined with the strong excitonic effect influences the optical excitation. Here we discover a new set of optical selection rules in monolayer WS2,imposed by valley and exciton angular momentum. We experimentally demonstrated such a ...
Exciton-polariton modes arising from interaction between bound excitons in monolayer thin semiconductor sheets and photons in a Fabry-Perot microcavity are considered theoretically. We calculate the dispersion curves, mode lifetimes, Rabi splitting, and Hopfield coefficients of these structures for two ...
& Cui, X. Exciton Binding Energy of Monolayer WS2. Scientific Reports 5, 9218 (2015). 8. 9. Zhao, W. et Xu, X., Yao, al. Evolution of Electronic Structure in Atomically W., Xiao, D. & Heinz, T. F. Spin and pseudospins in lTahyienreSdhtereatnssoitfiWonSm2 aentadl WdicShea2...