Inside the PbS QDs/Bi2O2Se hybrid photodetector, when PbS quantum dots, acting as energy donors, are photoexcited to an fired up state, they will transfer their Power non-radiatively to Bi2O2Se by means of dipole–dipole interactions. This causes electrons during the valence band of Bi2O2Se to changeover on the conduction band. From https://waiijing10864.pointblog.net/top-ไวจร-ง-secrets-69521500