论文标题
底部接触金属氧化物界面修饰，提高了有机光发射二极管的效率
Bottom Contact Metal Oxide Interface Modification Improving the Efficiency of Organic Light Emitting Diodes
论文作者
论文摘要
溶液处理的有机光二极管（OLED）的性能通常受到不均匀接触的限制。 In this work, we introduce Ni-containing solution-processed metal oxide (MO) interfacial layers inserted between indium tin oxide (ITO) and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) to improve the bottom electrode contact for OLEDs using the poly(p-phenylene vinylene) (PPV) derivative Super-Yellow （SY）作为发射层。对于含ITO/NI的MO/PEDOT：PSS底部电极结构，我们显示的润湿性能增强，从而提高了OLED设备效率。使用Cu-Li共掺杂的旋转镍钴矿[（Cu-Li）：NICO2O4]来实现最佳性能，SY OLEDS的当前效率和发光功效分别提高了12％和11％，从没有NI NI的MO界面修饰的标准设备获得ITO和PEDOT之间的NI标准设备中获得的值。增强性能归因于PEDOT：PSS的形态改善，因此提高了优化的ITO/（Cu-Li）的孔注入能力：NICO2O4/PEDOT：PSS Electrode。
The performance of solution-processed organic light emitting diodes (OLEDs) is often limited by non-uniform contacts. In this work, we introduce Ni-containing solution-processed metal oxide (MO) interfacial layers inserted between indium tin oxide (ITO) and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) to improve the bottom electrode contact for OLEDs using the poly(p-phenylene vinylene) (PPV) derivative Super-Yellow (SY) as an emission layer. For ITO/Ni-containing MO/PEDOT:PSS bottom electrode structures we show enhanced wetting properties that result in an improved OLED device efficiency. Best performance is achieved using a Cu-Li co-doped spinel nickel cobaltite [(Cu-Li):NiCo2O4], for which the current efficiency and luminous efficacy of SY OLEDs increased, respectively, by 12% and 11% from the values obtained for standard devices without a Ni-containing MO interface modification between ITO and PEDOT:PSS. The enhanced performance was attributed to the improved morphology of PEDOT:PSS, which consequently increased the hole injection capability of the optimized ITO/(Cu-Li):NiCo2O4/PEDOT:PSS electrode.
