The extra electron fills up the lower-energy state in the conduction band, causing excited electrons to, effectively, spill over into the higher-energy, photon-emitting state.
这个额外的电子填充了传导带的较低能级，有效的导致了被激发的电子溢入较高，释放光子的能级。
2
The pressure experiments suggest that the excited state emissions originate from the optical transitions between the first excitedelectron states and the first excited hole states.
压力实验结果还表明大量子点的第一激发态发光峰来源于电子的第一激发态到空穴的第一激发态的跃迁。
3
Excited triplet diene is formed via back electron transfer between radical ion pair within a solvent cage.