WebSep 15, 2024 · We first present in Fig. 1b the PL color plot as a function of bias in the charge tunable WSe 2 device. We recognize several exciton species including the bright neutral exciton (X 0), the dark ... WebSep 30, 2024 · Figure 1. Schematic illustration of single-photon emitter in WSe 2. (a) Real space representation: a free exciton is created (dark red arrow), strain efficiently funnels excitons with the electron in the bright (solid black line) and dark (dashed black line) conduction band down in energy towards the strain maximum near r 0 due to the strain …
Electronic and Optoelectronic Monolayer WSe2 Devices via …
WebApr 10, 2024 · By asymmetrically poling the perovskite layer, gold-contacted CH3NH3PbI3/WSe2 devices show a switchable open circuit voltage up to 0.78 V, along with a high EQE of 84.3%. ... we have determined the photocurrents (I ph = I light – I dark) for WSe 2 FET (I ph,WSe2), MAPbI 3 FET (I ph,perov) and ... Approaching the intrinsic … WebNov 7, 2016 · While in MoSe 2, the coherence lifetime of an optically bright exciton is determined by the radiative rate and intravalley scattering with acoustic phonons, in WS 2 scattering into dark... on time to do
Rydberg series of dark excitons and the conduction band spin …
WebApr 14, 2024 · The transfer-free WSe2-based photodetectors exhibit prominent photoresponse with a high photoresponsivity of ~1.7 × 104 A W−1 at Vds = 1 V and Vg = −60 V and a maximum detectivity value of ~1.2 × 1013 Jones. ... Given that the laser exciton would lead to an energy transfer from the WSe 2 to Au, ... e is the elementary … WebWe investigate Landau-quantized excitonic absorption and luminescence of monolayer WSe$_2$ under magnetic field. We observe gate-dependent quantum oscillations in the bright exciton and trions (or ... WebJan 27, 2024 · Our nano-optical data revealed material- and stacking-dependent exciton spectra of MoSe2, WSe2, and their heterostructures. ... Dark excitons can be visualized using TEPL for TMD samples on ... on time to time