Inside the PbS QDs/Bi2O2Se hybrid photodetector, when PbS quantum dots, acting as energy donors, are photoexcited to an psyched condition, they are able to transfer their Power non-radiatively to Bi2O2Se through dipole–dipole interactions. This results in electrons from the valence band of Bi2O2Se to transition towards the conduction band. In https://www.facebook.com/wiijing.net