Emission mechanism in the terbium complex doped PVK system
Emission mechanism in the terbium complex doped PVK system作者机构：Institute of Optoelectronic Technology Key Laboratory of Luminescence and Optical Information Technology Ministry of Education Beijing Jiaotong University Chemistry College Hebei Normal University
出 版 物：《Frontiers of Optoelectronics》 (光电子前沿(英文))
年 卷 期：2008年第1卷第Z1期
页 面：130-133页
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 0803[工学-光学工程]
基 金：supported by the National Natural Science Foundation of China (No. 90201004)
主 题：terbium complex organic light-emitting diode (OLED) exciton
摘 要：A new kind of rare earth（RE） complex Tb（oMBA）3phen was synthesized and used as an emitting material in *** material was doped into poly（N-vinylcarbazole）(PVK) as the emitting layer,which was made by spin *** kinds of devices were fabricated with the structures:（A） ITO/PVK:Tb（oMBA）3phen/LiF/Al;（B） ITO/PVK:Tb（o-MBA）3phen/BCP/AlQ3/LiF/Al;（C） ITO/BCP/PVK:Tb（oMBA）3phen/AlQ3/LiF/*** green emission could be obtained from device（A） and（C）.The photoluminescence（PL） and electroluminescence（EL） mechanisms of this material had been *** there was an overlap between the PL spectrum of PVK and the excitation spectrum of the terbium complex,there should be a Forster energy transfer process between *** excitation spectrum of PVK doped Tb（o-MBA）3phen system is similar with the excitation spectrum of PVK,yet it is different from that of Tb（o-MBA）***,the emission of Tb（o-MBA）3phen should partly come from the excitation of PVK while in the organic light-emitting diode（OLED）,based on Tb（o-MBA）3phen,the emission mainly comes from the direct recombination of electron and *** green emission can be obtained from the optimized multi-layer device（C） and the highest EL brightness reached 180 cd/m2at the voltage of 17 V.
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