【摘 要】
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In the past decade,near-infrared (NIR)-emitting materials have drawn great attention in the solution-processed polymer light-emitting diodes (PLEDs) with po
【机 构】
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SchoolofMaterialsScienceandEngineering,ChangzhouUniversity,Changzhou213164,China;CollegeofChemistry,
【出 处】
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中国化学会第十三届全国有机合成化学学术研讨会
论文部分内容阅读
In the past decade,near-infrared (NIR)-emitting materials have drawn great attention in the solution-processed polymer light-emitting diodes (PLEDs) with potential applications in night-vision displays,sensors,optical communication,and medical treatments.The highest maximum external quantum efficiency (EQE) of 14.7% was demonstrated in these platinum-based NIR emission devices.In order to deveolp new NIR-emitting platinum complexes and further study their structure-property relationship,some D-A-type mono-and bi-nuclear cyclometalated platinum complexes were designed and synthesized with multiple donor (D) units of triphenylamine (TPA) or carbazole (Cz) and acceptor (A) units of benzothiadiazol (BT) or phenazine (PZ).By tuning coordination configuration,D-A framework and linking positions,these mono-and bi-nuclear cyclometalated platinum complexes exhibited significantly different electro-luminescence performance in the PLEDs.Among these PLEDs with a configuration of ITO/PEDOT (40 nm)/PVK:complexes (50-60nm)/TPBI(30nm)/Ba (4nm)/Al,the highest EQE of 0.85% and a radiance of 164 μW/cm2 at an electroluminescent peak of 750 nm are obtained.
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