有机材料本身固有的宽谱带发射使有机电致发光器件的色度难以达到全色显示所要求的饱和色。

Due to the intrinsic broad spectra of the organic materials the chroma of the organic light emitting diode (OLED) can not meet the need of the full color display.

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分析气体辐射常用的三种模型：灰体模型、窄谱带模型和宽谱带模型的适用性，以及这三种模型的常规使用方法。

The dissertation analyses the applicability of three models of gas radiation computation: the gray model, the narrow band model and the wide band model, and analyses the normal method of using them.

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