While in the PbS QDs/Bi2O2Se hybrid photodetector, when PbS quantum dots, acting as Electrical power donors, are photoexcited to an enthusiastic state, they could transfer their Strength non-radiatively to Bi2O2Se by means of dipole–dipole interactions. This triggers electrons in the valence band of Bi2O2Se to changeover to the conduction band. https://ledbookmark.com/story3065993/waiijing-things-to-know-before-you-buy