Aggregation quenching of luminescence in electroluminescent conjugated polymers
Aggregation quenching of luminescence in electroluminescent conjugated polymers
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DOI：
10.1021/jp9839450
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发表时间：
1999-04-08
影响因子：
2.9
通讯作者：
Hsieh, BR
中科院分区：
文献类型：
--
作者：
Jakubiak, R;Collison, CJ;Hsieh, BR
我们报告了可溶性亚苯基亚乙烯基聚合物薄膜的光致发光测量，该聚合物作为发光二极管的发射材料具有重要的前景。我们明确表明，由于准分子，该材料中存在长寿命发射，并估计准分子形成的量子产率高达 50%。由于这种聚合物中的准分子在环境温度下很大程度上会发生非辐射衰减，因此它们的突出作用会大大降低电致发光共轭聚合物器件的可能效率。
We report measurements of photoluminescence from films of a soluble phenylenevinylene polymer that has prospective importance as the emissive material in light-emitting diodes. We show unambiguously that there is long-lived emission in this material due to excimers and estimate that the quantum yield for excimer formation is as high as 50%. Since excimers in this polymer largely decay nonradiatively at ambient temperature, their prominence serves to drastically reduce the possible efficiency of electroluminescent conjugated polymer devices.