CAJ | 학술논문

以载流子运动的扩散-漂移理论为基础,利用数值方法研究了有机发光层中双极载流子注入时的电势、电场、载流子浓度和复合率分布.结果表明:当两种载流子的迁移率相同实现平衡注入,并且当空穴和电子的复合为Langevin型时,复合率的分布曲线相当理想,参与复合的空穴和电子总量远大于其他情况,由此器件的发光性能也得到更大的优化.
이재류자운동적확산-표이이론위기출,이용수치방법연구료유궤발광층중쌍겁재류자주입시적전세、전장、재류자농도화복합솔분포.결과표명:당량충재류자적천이솔상동실현평형주입,병차당공혈화전자적복합위Langevin형시,복합솔적분포곡선상당이상,삼여복합적공혈화전자총량원대우기타정황,유차기건적발광성능야득도경대적우화.
Based on the drift-diffusion theory for the motion of charge carriers, the method of numerical calculation was adopted to study the effect of the mobility on the potential, electric field, carrier density and recombination rate in single layer OLEDs. The results show that when holes and electrons have the same mobility which balances the injection well and the recombination is to be the Langevin type, the distribution of the recombination rate is perfect. Because in this case the total quantity of the recombination of holes and electrons is much larger than the total quantity in other cases. Therefore the performance of devices can be better developed.