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首页> 外文期刊>Polymers for advanced technologies >Electroluminescent properties of a partially-conjugated hyperbranched poly(p-phenylene vinylene)
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Electroluminescent properties of a partially-conjugated hyperbranched poly(p-phenylene vinylene)

机译：部分共轭的超支化聚对亚苯基亚乙烯基的电致发光性能

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摘要

In this paper, the electroluminescent properties of a new partially-conjugated hyperbranched poly (p-phenylene vinylene) (HPPV) were studied. The single layer light-emitting device with HPPV as the emitting layer emits blue-green light at 496 nm, with a luminance of 160 cd/m{sup}2 at 9 V, a turn-on voltage of 4.3 V and an electroluminescent efficiency of 0.028 cd/A. By doping an electron-transport material [2-(4-biphenylyl)-5-phenyl-1,3,4-oxadiazole, PBD] into the emitting layer and inserting a thin layer of tris(8-hydroxy-quinoline)alumlnum (Alq{sub}3) as electron transporting/hole blocking layer for the devices, the electroluminescent efficiency of 1.42 cd/A and luminance of 1700 cd/m{sup}2 were achieved. The results demonstrate that the devices with the hyperbranched polymers as emitting material can achieve high efficiency through optimization of device structures.
机译：本文研究了一种新型的部分共轭超支化聚对苯撑亚乙烯基（HPPV）的电致发光性能。以HPPV作为发射层的单层发光器件发射496 nm的蓝绿色光，在9 V时的亮度为160 cd / m {sup} 2，开启电压为4.3 V，电致发光效率为0.028 cd / A。通过将电子传输材料[2-（4-联苯基）-5-苯基-1,3,4-恶二唑，PBD]掺杂到发射层中，并插入三（8-羟基-喹啉）铝薄层（ Alq {sub} 3）作为器件的电子传输/空穴阻挡层，实现了1.42 cd / A的电致发光效率和1700 cd / m {sup} 2的亮度。结果表明，以超支化聚合物为发光材料的器件可以通过优化器件结构实现高效率。

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