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PVK掺杂稀土铕配合物的电致发光中的能量传递过程 被引量:4

Energy Transfer from PVK to Europium Complex in Electroluminescence
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摘要 将Michler′sKetone(MK)作为协同配体与一种 β 双酮类稀土配合物Eu(fod) 3的氯仿溶液混合 ,两者有效配合生成一种新的稀土配合物Eu(fod) 3MK ,它的吸收谱中有一Michler′sKetone和Eu(fod) 3都不具有的新的吸收峰 ,吸收边在 45 0nm附近。这一新的吸收峰与PVK的发射谱有很好的重叠 ,从而使能量可以有效地通过Forster能量转移方式由PVK传递给稀土配合物。将这种新的稀土配合物掺杂到导电聚合物PVK中 ,并以它们为发光层制成电致发光器件。结果表明 :加入协同配体后的配合物的光致发光和电致发光中 ,PVK的发射均被有效抑制。 A new europium complex with a co ligand added on a common europium β diketone complex was adopted in the EL device of ITO/PVK: RE complex/Ca/Al. This co ligand results in more overlap between emission spectra of PVK and absorption spectra of RE complex and thus a more efficient energy transfer from PVK to Eu 3+ . As a result, the emission of PVK was totally quenched in the EL spectra when the doping ratio reached 5%.
出处 《中国稀土学报》 CAS CSCD 北大核心 2002年第2期173-175,共3页 Journal of the Chinese Society of Rare Earths
基金 高等学校骨干教师资助计划 国家自然科学基金重大项目 ( 2 9992 5 30 ) 国家自然科学基金资助项目 ( 699760 10 )
关键词 稀土 稀土配合物 协同配体 基质 能量传递 rare earths rare earth complexes the second ligand host energy transfer
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