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| Electroluminescent properties of three ternary europium complexes with different phenanthroline derivatives | |
| 作者姓名： | BIAN Zuqiang GAO Deqing GUAN Min XIN Hao LI Fuyou HUANG Chunhui WANG Kezhi & JIN Linpei . State Key Laboratory of Rare Earth Materials Chemistry and Applications Peking University Beijing China . |
| 作者单位： | BIAN Zuqiang1，2，GAO Deqing1，GUAN Min1，XIN Hao1，LI Fuyou1，HUANG Chunhui1，WANG Kezhi2 & JIN Linpei2 1. State Key Laboratory of Rare Earth Materials Chemistry and Applications，Peking University，Beijing 100871，China; 2. Department of Chemistry，Beijing Normal University，Beijing 100875，China |
| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
| 摘 要： | In the past decade a number of lanthanide com-plexes have been designed and synthesized for organic electroluminescent (EL) devices owing to their ex-tremely sharp emission bands and potentially high internal quantum efficiency113]. This characteristic made the lanthanide complexes one kind of promising candidates for full color flat-panel displays which re-quire pure red, green and blue emissions. So far, how-ever, the devices based on lanthanide complexes as emitters have not demonstrated v… |
Electroluminescent properties of three ternary europium complexes with different phenanthroline derivatives |
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| BIAN Zuqiang,,GAO Deqing,GUAN Min,XIN Hao,LI Fuyou,HUANG Chunhui,WANG Kezhi & JIN Linpei . State Key Laboratory of Rare Earth Materials Chemistry and Applications,Peking University,Beijing ,China, ..Electroluminescent properties of three ternary europium complexes with different phenanthroline derivatives[J].Science in China(Chemistry),2004,47(4):326-334. | |
| Authors: | BIAN Zuqiang GAO Deqing Guan Min XIN Hao Li Fuyou Huang Chunhui WANG Kezhi Jin Linpei |
| Institution: | 1. State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China;Department of Chemistry, Beijing Normal University, Beijing 100875, China 2. State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China 3. Department of Chemistry, Beijing Normal University, Beijing 100875, China |
| Abstract: | Three ternary Eu(III) complexes with general formula of Eu(DBM)3LN (DBM = dibenzoylmethanate, and LN (N = 13 ) stand for three different 1,10-phenanthroline derivatives) have been synthesized for vacuum deposition films-based electroluminescent devices. The complex Eu(DBM)3L3 (L3 = 2-phenyl-3-3-(carbazol-9-yl)propyl]imidazo4,5-f]1,10-phenan- throline) was designed with an effort to combine the electron-transporting phenanthroline plat-form and the hole-transporting carbazole group into one molecule expecting to improve both electron and hole transporting properties simultaneously. The results show that the variation of the neutral ligands in Eu(III) mixed ligand complexes is a simple and effective approach to the improvement in the thermal stability, PL and EL properties of materials. A double-layer device with the configuration of ITO/TPD (50 nm)/Eu(DBM)3L3 (50 nm)/Mg0.9Ag0.1 (200 nm)/Ag (100 nm) exhibited Eu(III)-based pure red emission with a maximum brightness of 561 cd/m2 at 16 V, and an onset driving voltage of 8 V. A device with the configuration of ITO/TPD (50 nm)/Eu(DBM)3L3 (5 nm):BCP (5 nm)]4/BCP (20 nm)/AlQ (10 nm) Mg0.9Ag0.1 (110 nm)/Ag (100 nm) gave high effi-cient and pure red light emission with a luminance of 1419 cd/m2. |
| Keywords: | dibenzoylmethane electroluminescence lanthanide N ligands |
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