We have demonstrated that fabrication and characterization of nanocomposite polymer light emitting devices with metal Zinc Oxide (ZnO) nanoparticles and 2,3-dibutoxy-1,4-poly(phenylenevinylene) (DBPPV). The current and luminance characteristics of devices with ZnO nanoparticles are much better than those of device with pure DBPPV. Optimized maximum luminance efficiencies of DBPPV–ZnO (3:1 wt%) before annealing (1.78 cd/A) and after annealing (2.45 cd/A) having a brightness 643 and 776 cd/m2at a current density of 36.16 and 31.67 mA/cm2are observed, respectively. Current density–voltage and brightness–voltage characteristics indicate that addition of ZnO nanoparticles can facilitate electrical injection and charge transport. The thermal annealing is thought to result in the formation of an interfacial layer between emissive polymer film and cathode.
展开▼
机译：我们已经证明了具有金属氧化锌（ZnO）纳米粒子和2,3-二丁氧基-1,4-聚（亚苯基亚乙烯基）（DBPPV）的纳米复合聚合物发光器件的制造和表征。具有ZnO纳米颗粒的器件的电流和亮度特性要比具有纯DBPPV的器件的电流和亮度特性好得多。在电流密度分别为36.16和31.67 mA /时，退火前（1.78 cd / A）和退火后（2.45 cd / A）的DBPPV-ZnO（3：1 wt％）亮度和亮度分别为643和776 cd / m2时，DBPPV-ZnO的最大亮度效率最佳。分别观察到cm2。电流密度-电压和亮度-电压特性表明，添加ZnO纳米颗粒可以促进电注入和电荷传输。认为热退火导致在发光聚合物膜和阴极之间形成界面层。
展开▼
