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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The organic white light emitting diodes made of this film have super performance.

用此薄膜封装成白光发光二极管的性能良好。

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The shielding film shows light emitted by the light emitting element and passing through the icon board.

所述遮挡膜示出所述发光器件发射的并且通过所述图标板的光。

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Using a thin film of polyfluorene, a light-emitting plastic, they have created a laser which reacts with explosive vapour.

BBC: Plastic lasers shed light on hidden explosives