When the injected electrons find the lower-energy state occupied, they spill over into the other state; realigned with their holes, they release their extra energy as photons.
当注入的电子找到已经被占据的更低能级，他们就会溢出，进入其他状态：和它们的凹陷重新组合，并且以光子的形式释放多余能量。
Electrons are injected into the higher upper state via resonant tunneling from the previous injector.
电子通过之前注入器的谐振隧道注入到更高的能态。
Electrons and holes injected into the polymer film form bound states called excitons that break down under electrical current, emitting light as they do so.
电子和空穴注入高分子膜所形成的界态称为电子空穴对，电子空穴对冲破电流的阻碍，于是便产生了光。
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