Khoie, "Modeling of multiple-quantum-well solar cells including capture, escape, and recombination of photoexcited
carriers in quantum wells," IEEE Transactions on Electron Devices, vol.
On the concept of light absorption, only the photons having the energies larger than the bandgap of absorbers can contribute to photoexcited
The adsorbed dye will absorb light and photoexcited
electrons will transfer to the conduction band of Ti[O.sub.2].
For example, amorphous Ti[O.sub.2] powders generally exhibit a large specific surface area, but poor photocatalytic activity or negligible due to recombination of electrons and positive holes photoexcited
defects (i.e., imperfections, impurities, dangling bonds, or microvoids) located on the surface and in the bulk of the particles .
Photodynamic therapy (PDT), a minimally invasive treatment method for a multitude of diseases including cancer, uses reactive oxygen species (ROS) that are generated from photoexcited
So far, theoretical investigations are mainly focused on the first process, which is relevant to energy band configuration because photoexcited
carriers are generated only when the incident photon energy is higher than the bandgap of the photocatalyst.
'The information of which valley a photoexcited
electron resides in can be described by a spin-like quantity, the valley pseudospin,' Huber explained.
When illuminated, the shells not only emit light of their own, but they also channel photoexcited
carriers (excitons) to the cores of the quantum dots, which enhances the laser's core light emission.
The weak peak at 3.448 eV is attributed to recombination between 2DEG and photoexcited
The visible emission is usually attributed to various recombination pathways between photoexcited
charges being trapped at defect states within the bandgap.
The overlap between the two plots suggests an energy transfer mechanism from photoexcited
[pi]-electron-rich derivative B to ground state electron-deficient TNP.
Excess dye loading can lead to multilayer formation, which causes quenching of the photoexcited
electrons and leads to a reduction of charge injection .