Park Byung Min, Kim Gi Ppeum, Mun Sae Chan, Chang Ho Jung
J Nanosci Nanotechnol. 2015 Oct;15(10):7693-8. doi: 10.1166/jnn.2015.11202.
The green polymer light emitting diodes (PLEDs) were fabricated using the solution precursor synthesis method. To improve the device's electrical. and optical properties, gold (Au) nanoparticles (NPs) were added to the hole injection layer (HIL) with poly(3,4-ethylene- dioxythiophene):poly(styrenesulfolnate) (
PSS) organic material. The green PLED devices with a structure of glass/ITO/PEDOT:PSS+Au NPs/PVK:Ir(ppy)3/TPBi/LiF/Al were prepared by conventional spin-coating and thermal evaporation methods. Various concentrations of Au NPs were doped to the HILs to optimize the device's light emitting characteristic. The effects of Au NPs concentrations on the properties of PLEDs were investigated. The doping concentrations of Au NPs were changed ranging from 0.0 to 1.0 vol%. At the optimized Au NPs concentration of 0.5 vol%, we also studied the effects of various film layers with and without Au NPs on the properties of PLEDs. The maximum luminance and external quantum efficiency of the devices were found to be 20,430 cd/m2 and 7.49%, respectively.
采用溶液前驱体合成法制备了绿色聚合物发光二极管（PLED）。为改善器件的电学和光学性能，将金（Au）纳米颗粒（NPs）添加到具有聚（3,4 - 乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）有机材料的空穴注入层（HIL）中。通过传统的旋涂和热蒸发方法制备了具有玻璃/ITO/PEDOT:PSS + Au NPs/PVK:Ir(ppy)3/TPBi/LiF/Al结构的绿色PLED器件。将不同浓度的Au NPs掺杂到HIL中以优化器件的发光特性。研究了Au NPs浓度对PLED性能的影响。Au NPs的掺杂浓度在0.0至1.0体积％范围内变化。在优化的Au NPs浓度为0.5体积％时，我们还研究了有无Au NPs的各种薄膜层对PLED性能的影响。发现器件的最大亮度和外量子效率分别为20,430 cd/m²和7.49％。
