In the PbS QDs/Bi2O2Se hybrid photodetector, when PbS quantum dots, performing as Strength donors, are photoexcited to an fired up state, they are able to transfer their energy non-radiatively to Bi2O2Se through dipole–dipole interactions. This results in electrons from the valence band of Bi2O2Se to transition to the conduction band. From the Pb… Read More