摘要
合成了一种新型的共掺杂稀土Eu-Gd配合物Gd0.5Eu0.5(TTA)3Dipy,将其作为红光发射材料制备了结构为ITO/PVK:Gd0.5Eu0.5(TTA)3Dipy/PBD/Al的有机电致发光薄膜器件,得到了单色性好的红色有机电致发光器件,器件的开启电压为9 V,在16 V时达到最大亮度109 nit。研究了Eu-Gd配合物与PVK共掺杂体系的激发光谱和光致发光谱,结果发现两者间存在着能量转移,表明Gd3+的存在促进了PVK到Eu3+的能量传递。
The new complex of Gd0.5 Eu0. 5 （TTA）3Dipy is synthesized and used as a red light-emitting material in our organic electroluminescent devices with the structure of ITO/PVK： Gd0. 5 Eu0. 5 （TTA）3 Dipy/PBD/Al. This material has strong photoluminescence and relatively good electroluminescence along with excellent mono-chromaticity. The maximal bright- ness of the device is 109 nit at the voltage of 16 V. And the emission and the excitation spectra of the emissive layer of the device were measured. It was found that Gd^3＋ may play the role to promote the energy transfer from PVK to Eu^3＋. The possible energy transfer process of the device was preliminarily discussed.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2008年第3期308-311,共4页
Journal of Optoelectronics·Laser
基金
国家“863”计划资助项目(2006AA03Z0412)
国家重点基础研究发展计划“973”资助项目(2003CB314707)
国家自然科学基金重点资助项目(10434030)
国家自然科学基金资助项目(60576016)
北京市自然科学基金资助项目(2073030)
关键词
红色
有机电致发光器件
共掺杂稀土配合物
red
organic electroluminescent device
co-doped rare earth complexes
