WebStrong many-body interactions in two-dimensional (2D) semiconductors give rise to efficient exciton–exciton annihilation (EEA). This process is expected to result in the generation … WebThis implies that exciton-exciton annihilation rates are proportional to the cube of exciton density, different from the usual square power-law in two-body scattering processes. In …

Exciton dynamics and annihilation in WS2 2D semiconductors

WebThis reverse intersystem crossing significantly influences exciton annihilation processes and external quantum efficiency roll-off in TADF based organic light-emitting diodes … WebExciton-exciton annihilation dominated the kinetics at high exciton densities. When annihilation was minimized, the observed lifetime was measured to be 8.6 ± 0.6 ns, which is over an order... netsh interface ip set address wifi

Auger recombination of excitons in one-dimensional systems

Webdonor exciton to an acceptor exciton that are very close to each other and fixed at nearby sites, as shown in Figure 3. This is similar to fluorescence resonance energy transfer (FRET); however, unlike FRET, the acceptor site is at an excited state. Energy levels that are relevant to exciton−exciton annihilation (EEA) are also shown in ... WebFeb 7, 2024 · Abstract Using microtransient absorption spectroscopy, we show that the dynamical form of exciton-exciton annihilation in atomically thin black phosphorous can be made to switch between time varying 1D scattering and time-independent 2D scattering. WebJun 25, 2024 · We model the experimental data taking into account three dynamical processes: natural decay with a time constant of τ, diffusion-driven exciton–exciton annihilation, and direct excitation of ... i\\u0027m greatly appreciated