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以在高场作用下载流子对三角势垒的Fowler Nordheim隧穿理论为基础 ,建立了双层有机电致发光器件载流子的输运与复合发光模型。求出了稳态下电荷载流子的复合发光与电压和界面势垒的函数关系式 ,计算并讨论了所加电压和阳极区与阴极区厚度之比 (Lh/Le)对复合发光的影响。该理论模型很好地解释了电场对复合区域的调制作用。
Based on the Fowler Nordheim tunneling theory of carrier-to-delta barrier at high field, a model of carrier transport and recombination luminescence in a two-layer organic electroluminescent device is established. The relationship between recombination luminescence and voltage and interfacial potential barrier of charge carrier in steady state was obtained. The influence of the applied voltage and the thickness ratio of anode region to cathode region (Lh / Le) on recombination luminescence was calculated and discussed . The theoretical model well explains the modulation effect of the electric field on the recombination region.