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首页> 外文期刊>ACS applied materials & interfaces >Influence of the Molecular Weight and Size Dispersion of the Electroluminescent Polymer on the Performance of Air-Stable Hybrid Light-Emitting Diodes
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Influence of the Molecular Weight and Size Dispersion of the Electroluminescent Polymer on the Performance of Air-Stable Hybrid Light-Emitting Diodes

机译：电致发光聚合物的分子量和大小分散度对空气稳定型混合发光二极管性能的影响

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摘要

The influence of the chain length and the molecular weight distribution of the electroluminescent polymer on the carrier transport properties and morphology of air stable hybrid light-emitting diodes is reported. It is found that variations between diverse as-received commercial batches play a major role in the performance of the devices, whose maximum luminance can differ up to 2 orders of magnitude. Through complementary optoelectronic, structural, and morphological characterization techniques, we provide insights into the relationship between charge dynamics and the structure of polymeric electroluminescent materials. The carrier dynamics are found to be dominated by both the polymeric chain length and the hole transport, which in turn is dependent on the concentration of trap states. Furthermore, the chain length is seen to affect the morphology of the active layer.
机译：报道了电致发光聚合物的链长和分子量分布对空气稳定的杂化发光二极管的载流子传输性质和形态的影响。发现在收到的各种商业批次之间的差异在设备的性能中起主要作用，其最大亮度可能相差2个数量级。通过互补的光电，结构和形态表征技术，我们可以洞悉电荷动力学与聚合物电致发光材料的结构之间的关系。发现载流子动力学受聚合物链长和空穴传输的支配，而这又取决于陷阱态的浓度。此外，链长被认为影响活性层的形态。

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