摘要
合成并用元素分析、红外光谱和核磁表征了共振配合物EuY(DBM)4(Ma)phen2(C1)和Eu2(DBM)4(Ma)phen2(C2)。用真空蒸镀组装了发光器件,其结构是:Al0.9∶Ag0.1/Alq/Eu-complex/TPD/ITO。在18V电压和55 mA cm-2电流下,器件C1的最大发光亮度是342 cd m-2;在18V电压和57mAcm-2电流下,器件C2的最大发光亮度是267 cd。m-2。在18V电压和55 mA cm-2电流下,器件C1的最大发光亮度是342 cd m-2。C1的发光亮度比C2大,其原因是Y3+的配体吸收的能量通过马来酸根迁移给了Eu3+。
EuV （ DBM ）4 （Ma） phen2 （ C1 ） and Eu5 （DBM） 4 （Ma） phen5 （ C2 ） （ DBM： dibenzoylmethane, phen： 1,10-phennanthroline, MA：maleic acid） were synthesized and characterized by EA, IR, and 1 HNMR in this paper. The LED cell was fabricated by conventional vacuum vapor deposition in a vacuum. Their structures are A10.9： Ag0.1/Alq/Eu-complex/TPD/ITO. The maximum emission intensity of 342 cd m^-5 and 267 cd m^-5 are observed at 18V and 55 mA cm^-2 in the device of C1. The luminescence intensity of the LED with C1 as EML is brighter than that of the LED with C5 as EML. The enhanced Eu^3＋ luminescence is mostly due to the presence of efficient energy migration from the ligands coordinated Y^3＋ to Eu^3＋ through rnaleic acid bridge.
出处
《贵州师范大学学报（自然科学版）》
CAS
2006年第2期60-62,112,共4页
Journal of Guizhou Normal University：Natural Sciences
基金
湖南省教育厅项目资助(04C083)
关键词
双核铕配合物
器件
电致发光
能量迁移
binuclear Eu-complexes
devices
electroluminescence
energy migration
