Enhanced electroluminescence of Eu3+ by Tb3+ in complexes Tb1−xEux(TTA)3Dipy
Enhanced electroluminescence of Eu3+ by Tb3+ in complexes Tb1−xEux(TTA)3Dipy
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DOI：
10.1016/j.jlumin.2007.05.013
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发表时间：
2008
影响因子：
3.6
通讯作者：
Y. Lv;Jingchang Zhang;Lingxuan Wang;W. Cao;Zheng Xu
中科院分区：
文献类型：
--
作者：
Y. Lv;Jingchang Zhang;Lingxuan Wang;W. Cao;Zheng Xu
合成了一系列稀土三元化合物Tb1−xEux(TTA)3Dipy (HTTA=thenoyltrifluoroacetone, Dipy=2,2 ' -dipyridyl)，并通过DTA-TG、IR、UV和荧光光谱对化合物进行了表征。光致发光测量表明，铕（III）配合物在紫外辐射下发出强烈的红光。红外光谱表明配合物已成功合成，热重曲线表明配合物在220℃左右的温度下是稳定的。将铕配合物与聚（n -乙烯基咔唑）（PVK）共混并自旋包覆成薄膜，制备了具有氧化铟锡(ITO)/PVK:Tb1−xEux(TTA)3Dipy/BCP（2,9-二甲基-4,7-二苯基-1,10-菲罗啉）/铝喹啉(AlQ)/Al结构的电致发光器件，掺入Tb3+后Eu3+的发光增强。因此，它可能是提高镧系配合物EL强度的有效方法。
A series of rare earth ternary compounds of Tb1−xEux(TTA)3Dipy (HTTA=thenoyltrifluoroacetone, Dipy=2,2′-dipyridyl) have been synthesized, and the characteristics of the compounds have been performed by DTA-TG, IR, UV and fluorescence spectroscopy. Photoluminescence measurements indicated that the complexes of Eu(III) emit strong red luminescence under UV radiation. IR spectra suggest that complexes have been successfully synthesized, and TG curves indicate that the complexes are stable up to a temperature of about 220°C. The Eu complex was blended with poly(N-vinylcarbazole) (PVK) and spin coated into films, and electroluminescence devices with the structure of Indium Tin Oxide (ITO)/PVK:Tb1−xEux(TTA)3Dipy/BCP(2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline)/aluminum quinoline (AlQ)/Al were fabricated, the luminescence of Eu3+complexes enhances after doping with Tb3+. Therefore, it may be an effective method to improve the EL intensity of the lanthanide complex.