输运层势垒对双层结构器件复合发光的影响

通过分析双层结构器件复合发光的实际物理过程，建立了双层器件载流子输运与复合发光的多势垒的理论模型，计算并讨论了器件复合效率随外加电压及输运层势垒（包括势垒高度和宽度）的变化关系，该理论模型较好地解释实验现象。

Influences of Transport Layers Barriers on Recombination Efficiency in Bilayer Organic Devices

Based on the physical processes of carriers transport and recombination,a multibarriers model for carriers transport and recombination in bilayer organic devices is present.The influences of applied bias and thin films (transport layers) barriers on carriers recombination and its efficiency are calculated and discussed.In bilayer organic devices the charge density inside the sample is controlled by interfacial charge accuulation.Interfacial charge accumulation enhances the field in the cell compartment adjecent to the contact at which minority carrier injected.This gives rise to enhanced minority carriers injection and explains why efficient bilayer organic devices can be fabricated.For appopriate values of anodic and cathodic zone energy barriers,a greater recombination efficiency can be acquired.The theory from this model reasonably explained the experimential phenomens,and it proved that the field can control the carriers recombination regions.