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。

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By using the electron correlated basis function of excited state, we calculate the effect of electron interaction on the bandwidth of conductive polymers.

用激发态相关基函数理论，计算了电子-电子相互作用对导电聚合物能带宽度的影响。

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The pressure experiments suggest that the excited state emissions originate from the optical transitions between the first excited electron 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。

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So, for example, we could talk about the n equals 2 state, so that's this state here, and it's also what we could call the first excited state. So we have the ground state, and if we excite an electron into the next closest state, we're at the first excited state, or the n equals 2 state.

例如，我们可以考虑n等于2的状态，它在这里，它也被称作是第一激发态,我们有基态，如果我们把一个电子,激发到它最近邻的态,那就是第一激发态，或者n等于2的态。

麻省理工公开课 - 化学原理课程节选

When an electron drops back from an excited to an unexcited state, it gives out light.

ECONOMIST: Optoelectronics