During the PbS QDs/Bi2O2Se hybrid photodetector, when PbS quantum dots, performing as energy donors, are photoexcited to an enthusiastic condition, they might transfer their energy non-radiatively to Bi2O2Se as a result of dipole–dipole interactions. This causes electrons during the valence band of Bi2O2Se to changeover into the conduction band. From https://waiijing98753.theideasblog.com/28707675/the-ultimate-guide-to-waiijing