一种新型共掺杂稀土配合物Gd_(0.5)Eu_(0.5)(TTA)_3Dipy的电致发光特性  

Electroluminescence of New Novel Coprecipitated Rare Earths Complexes Gd_(0.5)Eu_(0.5)(TTA)_3 Dipy

作　　者：宋林[1] 徐征[1] 赵谡玲[1] 吕玉光[2] 符雅丽[2] 刘然[1] 李远[1] 张敬畅[2] 

机构地区：[1]北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室,北京100044 [2]北京化工大学现代催化研究所化工资源有效利用国家重点实验室,北京100029

出　　处：《中国稀土学报》2007年第3期264-268,共5页Journal of the Chinese Society of Rare Earths

基　　金：863计划(2006AA03Z0412);国家自然科学基金(60576016);北京市自然科学基金(2073030);国家重点基础研究发展计划973(2003CB314707);国家自然科学基金重点项目(10434030)资助

摘　　要：制备了一类以α-噻吩甲酰基三氟丙酮(TTA)为第一配体、2,2′-联吡啶(Dipy)为第二配体的共掺杂铕钆配合物Gd0.5Eu0.5(TTA)3Dipy。用其作为发光层材料制作了电致发光器件:ITO/PVK:Gd0.5Eu0.5(TTA)3Dipy/PBD/Al。讨论并证明了Gd3+与Eu3+之间存在F rster能量传递。研究了铕钆配合物与PVK共掺杂体系的激发光谱和光致发光谱,发现两者之间存在着能量转移,说明Gd3+的加入抑制了PVK自身的本征发光,促进了PVK到Eu3+的能量传递,得到了单色性很好的红光。A novel coprecipitated rare earths complexes Gd0.5Eu0.5（TTA）3Dipy were synthesized and chosen as the emitter material in the organic electroluminescent device ITO/PVK： Gd0.5 Eu0.5 （ TTA ）3Dipy/ PBD/Al. It was proved that there is Ftirster energy transfer from Gd^3＋ to Eu^3＋. The electroluminescent mechanism of the device was and analyzing the emission and the excitation spectra of the emissive layer. Gd^3＋~ may play the role to promote the energy transfer from PVK to Eu^3＋ and inhibit the intrinsic luminescence of PVK. The device emitted red light with good monochromaticity. The possible energy transfer process of the device was preliminarily discussed.

关 键 词：α-噻吩甲酰基三氟丙酮铕钆 电致发光 稀土 

分 类 号：O482.31[理学—固体物理] O614.33[理学—物理]