Electroluminescence in ruthenium(II) complexes
Electroluminescence in ruthenium(II) complexes
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DOI：
10.1021/ja0270524
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发表时间：
2002-11-13
影响因子：
15
通讯作者：
Malliaras, GG
中科院分区：
文献类型：
--
作者：
Bernhard, S;Barron, JA;Malliaras, GG
我们已经研究了电化学，光谱，和电致发光性质的Ru具有各种脂肪族侧链，以及一个更广泛的家庭，π共轭系统的二亚胺配合物。使用氧化铟锡（ITO）和金触点从这些复合物制造的固态电致发光器件的性能似乎是由离子空间电荷效应主导的。它们的电致发光效率受到Ru膜的光致发光效率的限制，而不是受到来自接触的电荷注入的限制。在联吡啶配体上引入二叔丁基侧链被认为是在减少发光的自猝灭方面最有益的取代。
We have investigated the electrochemical, spectroscopic, and electroluminescent properties of a family of diimine complexes of Ru featuring various aliphatic side chains as well as a more extended,pi-conjugated system. The performance of solid-state electroluminescent devices fabricated from these complexes using indium tin oxide (ITO) and gold contacts appears to be dominated by ionic space charge effects. Their electroluminescence efficiency was limited by the photoluminescence efficiency of the Ru films and not by charge injection from the contacts. The incorporation of di-tert-butyl side chains on the dipyridyl ligand was found to be the most beneficial substitution in terms of reducing self-quenching of luminescence.