The biexciton state only exists in charge neutral WSe2, which is realized through the control of efficient electrostatic gating. In the lightly electron-doped WSe2, one free electron binds to a biexciton and forms the trion-exciton complex. Improved understanding of the biexciton and trion-...
state located 49 meV below the A exciton as seen in Fig.2b. We isolate the dominant contributor to the D-A splitting to be the coupling between configurations, making it almost five times larger than the CBS. Fig. 2: Low-energy excitonic states. aAbsorption spectrum for X using a phen...
The possibility of electrical manipulation and detection of a charged exciton (trion) before its radiative recombination makes it promising for excitonic devices. Using a few-layer graphene/monolayer WS2/monolayer graphene vertical heterojunction, we report interlayer charge transport from top few-layer gr...
Excitonic trion X - in semiconductor quantum wells Fine structure of the quantum-dot trion All-optical trion generation in single-walled carbon nanotubes Trion, biexciton, and exciton dynamics in single self-assembled CdSe quantum dots Oscillator strength of trion states in ZnSe-based quantum wells ...
TEMPORAL DYNAMICS OF EXCITON–TRION SYSTEM.2DEGExcitonstrionsTime-resolved and time-integrated circularly-polarized photoluminescence of excitons and trions have been studied in external magnetic fields up to 10 T. ZnSe-based quantum well structures of n-type with carrier densities varied from 5×109 ...
Trion Binding Energy Variation on Photoluminescence Excitation Energy and Power during Direct to Indirect Bandgap Crossover in Monolayer and Few-Layer MoS 2The behavior of the trion and exciton photoluminescence (PL) under various laser ... S Golovynskyi,OI Datsenko,D Dong,... - 《Journal of ...
Multiexciton harvesting from semiconductor quantum dot has been a new approach for improving the semiconductor device efficiency which include quantum dot sensitized solar cells (QDSC) and photodetectors. Till date, not many reports are available where relation between exciton/multiexciton dissociation in...
Indeed, gate-controlled exciton-to-trion (X–T) conversions have been explored to realize optical gain associated with trion-electron population inversion at low levels of carrier densities16. Similar gate-controlled X–T conversion could enable long valley polarization so that VDOF of trions could...
(labelled X). The feature around 2,065 meV can be identified as the negatively charged exciton (labelled X−), its fine structure will be discussed below. The energetic splitting between the neutral and charged exciton allows us to determine the background carrier concentration in our sample...
Formation and decay dynamics of trions in p-doped single-walled carbon nanotubes with a hole density of -1nm have been investigated by means of time-resolved luminescence spectroscopy. Trions are formed in 60 fs from the exciton state via the hole-trion interaction, and annihilate with a decay...