| 两种铽配合物与PVK混合体系的发光机理研究 |
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| 引用本文： | 徐颖,邓振波,徐登辉,肖静,王瑞芬.两种铽配合物与PVK混合体系的发光机理研究[J].光谱学与光谱分析,2006,26(5):812-815. |
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| 作者姓名： | 徐颖 邓振波 徐登辉 肖静 王瑞芬 |
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| 作者单位： | 1. 北京交通大学光电子技术研究所，发光与光信息教育部重点实验室，北京 100044
2. 河北师范大学化学系，河北 石家庄 050091 |
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| 基金项目： | 中国科学院资助项目
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北京市科技新星计划项目
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河北省自然科学基金 |
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| 摘 要： | 研究了稀土配合物Tb(p-MBA)3phen(样品Ⅰ)和Tb(p-ClBA)3phen(样品Ⅱ)与导电聚合物材料PVK掺杂体系的光致发光和电致发光特性。发现在样品Ⅰ与PVK混合薄膜的光致发光中，除了三价铽离子的发光外，还能看到明显的PVK的发光;而在电致发光中，PVK的发光完全被抑制，只能看到Tb3+的绿光发射。对样品Ⅱ与PVK的混合发光层，无论其光致发光谱还是电致发光谱，都没有看到410 nm处PVK的发射。进一步测量两种材料的激发光谱，初步探讨了器件的发光机理。样品Ⅰ的发光可能来源于两个方面，一是PVK到稀土配合物的不完全的能量传递，二是由于载流子俘获机理;样品Ⅱ的发光则是由于PVK到稀土配合物的完全的能量传递。
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| 关 键 词： | 稀土配合物 电致发光 激子 能量传递 电子陷阱 |
| 文章编号： | 1000-0593（2006）05-0812-04 |
| 收稿时间： | 2005-03-26 |
| 修稿时间： | 2005-08-28 |
The Emission Mechanisms of Two Kinds of Tb Complexes Doped in PVK System |
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| XU Ying,DENG Zhen-bo,XU Deng-hui,XIAO Jing,WANG Rui-fen.The Emission Mechanisms of Two Kinds of Tb Complexes Doped in PVK System[J].Spectroscopy and Spectral Analysis,2006,26(5):812-815. |
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| Authors: | XU Ying DENG Zhen-bo XU Deng-hui XIAO Jing WANG Rui-fen |
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| Institution: | 1. Institute of Optoelectronic Technology, Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China2. Department of Chemistry, Hebei Normal University, Shijiazhuang 050091, China |
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| Abstract: | Two kinds of new rare earth complexes Tb(p-MBA)3phen (sample Ⅰ) and Tb(p-ClBA)3phen (sample Ⅱ) were synthesized, and photoluminescence (PL) and electroluminescence (EL) characteristics of the terbium complex and PVK blended system were investigated. As to the sample Ⅰ, the emission of PVK was completely restrained in the EL spectra of the blended film; while in the PL spectra, obvious emission of PVK appeared besides the emission of Tb3+. But as to the sample Ⅱ, only the green emission from Tb3+ can be observed in both PL and EL spectra of the doping system. So there are two processes that occur in sample Ⅰ, one is the incomplete Frster energy transfer process from PVK to the Tb complex, and the other is the carrier charge trapping process. The main mechanism of sample Ⅱ is the energy transfer process. |
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| Keywords: | Rare earth complex Electroluminescence (EL) Exciton Energy transfer Electron trap |
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