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 spectroscop...
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 spectroscop...
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 and excited excitonic states as a function of gate voltage and track the evolution of the...
& 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 Yukawa-like screening potential is suggested to describe the effect of environment on the binding energy of an exciton in the monolayer semiconductor WS2. The FK Operator Method combined with the Levi-Civita transformation is used to retrieve energies for the states of n= 1, 2, 3 which ag...
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 ...
Excitons and exciton-phonon interactions in 2D MoS2, WS2 and WSe2 studied by resonance Raman spectroscopy The 2D materials exhibit a very strong exciton binding energy, and the exciton-phonon coupling plays an important role in their optical properties. Resonance Raman spectroscopy (RRS) is a very...
Molecular-beam epitaxy of monolayer and bilayer WSe2: A scanning tunneling microscopy/spectroscopy study and deduction of exciton binding energy Interest in two-dimensional (2D) transition-metal dichalcogenides (TMDs) has prompted some recent efforts to grow ultrathin layers of these materials epita.....
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 ...
We integrated WSe2 and WS2 monolayers into photonic Tamm-structures in order to observe Tamm-plasmon exciton-polaritons under ambient conditions. The chara... N Lundt,S Klembt,S Stoll,... 被引量: 22发表: 2017年 Room temperature Tamm-Plasmon Exciton-Polaritons with a WSe2 monolayer Solid-stat...