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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Efficient emissive site in organic EL device utilizing 8-hydroxyquinoline aluminum and diamine derivative
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Efficient emissive site in organic EL device utilizing 8-hydroxyquinoline aluminum and diamine derivative

机译：使用8-羟基喹啉铝和二胺衍生物的有机EL器件中的有效发射点

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摘要

An efficient emissive site has been investigated by inserting a monolayer size porphine layer (TPP) as a marker in an organic electroluminescent (EL) device consisting of 8-hydroxyquinoline aluminium (Alq_3) as an emissive layer and diamine derivative (TPD) as the hole transporting layer. Emissions from Alq_3 and TPP have been observed from the device and the emission intensity from the TPP has been noted to change depending on the distance between the hetero-interface and the inserted site. Emission from the marker layer shows its highest intensity at a position 7 nm from the interface of Alq_3 and TPD. The result also shows that the hetero-interface is not the highest emissive site, but a site several nanometres inside the emissive layer shows the highest emission intensity. The mechanism of emissive recombination has been investigated in an EL device with an emissive layer and a carrier transporting layer.
机译：通过在由8羟基喹啉铝（Alq_3）作为发光层和二胺衍生物（TPD）组成的有机电致发光（EL）器件中插入作为标记的单层大小的卟啉层（TPP）作为标记，研究了有效的发射位点运输层。从设备观察到Alq_3和TPP的发射，并且注意到TPP的发射强度根据异质界面和插入位点之间的距离而变化。从标记层发射的光在距Alq_3和TPD的界面7 nm处显示出最高强度。结果还表明，异质界面不是最高的发射位点，而是在发射层内几纳米的位点显示出最高的发射强度。在具有发光层和载流子传输层的EL器件中，已经研究了发光复合的机理。

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