While in the PbS QDs/Bi2O2Se hybrid photodetector, when PbS quantum dots, performing as energy donors, are photoexcited to an psyched state, they can transfer their Electricity non-radiatively to Bi2O2Se by means of dipole–dipole interactions. This will cause electrons within the valence band of Bi2O2Se to transition for the conduction band. https://waiijing10875.popup-blog.com/27923203/waiijing-no-further-a-mystery