High-efficiency low operation voltage organic light-emitting diodes

High-efficiency low operation voltage organic light-emitting diodes
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高效率低工作电压有机发光二极管

DOI:
10.1063/1.2718274
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发表时间:
2007-03
影响因子:
4
通讯作者:
--
中科院分区:
物理与天体物理2区
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作者报道了一种降低有机发光二极管功耗的简单方法。在发光层中引入2,9-二甲基-4,7-二苯基-1,10-菲咯啉层可以显著提高载流子复合效率。在空穴传输层中存在三(8-羟基喹啉)铝(Alq 3)的夹层也引起类似的现象。此外,他们用十六碳铜酞菁层修饰阳极,以进一步增强电致发光性能。他们获得了使用Alq 3作为发射层的高性能发光二极管,其具有7.63cd scinA的高电流效率和2.89V的低开启电压。
The authors report a simple approach to reduce power consumption of organic light-emitting diodes. Introducing a 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline layer into the emissive layer can dramatically improve the carrier recombination efficiency. The presence of an interlayer of tris(8-quinolinolato)aluminum (Alq3) within the hole-transport layer also gives rise to the similar phenomenon. Furthermore, they modified the anode with the ultrathin hexadecafluorocopper phthalocyanine layer in order to further enhance the electroluminescent properties. They obtained the high performance light-emitting diodes using Alq3 as the emissive layer with a high current efficiency of 7.63cd∕A and a low turn-on voltage of 2.89V.
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