Rare Earth Complex as Electron Trapper and Energy Transfer Ladder for Efficient Red Iridium Complex Based Electroluminescent Devices

2015 ◽  
Vol 7 (29) ◽  
pp. 16046-16053 ◽  
Author(s):  
Liang Zhou ◽  
Leijiao Li ◽  
Yunlong Jiang ◽  
Rongzhen Cui ◽  
Yanan Li ◽  
...  
2007 ◽  
Vol 122-123 ◽  
pp. 671-673 ◽  
Author(s):  
Zheng Chen ◽  
Zhenbo Deng ◽  
Yumeng Shi ◽  
Ying Xu ◽  
Jing Xiao ◽  
...  

2014 ◽  
Vol 541-542 ◽  
pp. 185-189 ◽  
Author(s):  
Yu Guang Lv ◽  
Li Zhang ◽  
Kui Lin Lv ◽  
Shu Jing Zhou ◽  
Du A ◽  
...  

Rare earth metal complexes have special characteristics, such as extremely narrow emission bands and high internal quantum efficiencies, which are suitable to be used as the emission materials, chemistry and biological technology. Ternary nano complex of terbium gatifloxacin phenanthroline was synthesized.The composition and structure of ternary complex were characterized by element analysis, Mass Spectrometry (MS), UltraViolet Absorption Spectrometry (UV) and fluorescence spectra(FS). The influences of solubility, thermal stability and luminescent properties of complex as well as addition of phenanthroline secondary ligands on the fluorescence spectra of the ternary complexes were studied. The results of fluorescence spectra analysis showed that partial energy was transferred from Characterization to terbium ions by intramolecular energy transfer processes, meanwhile, the addition of phenanthroline can effectively increase the luminescence intensity of terbium icons. The complex possessed well luminescence and showed characteristic emission peaks of Tb3+ under UV light excitation and emitted strong green fluorescence. Moreover, in an ITO/PVK/Tb(GFLX)3Phen/Al device, Tb3+ ion can be excited by intramolecular ligand-to-metal energy transfer process. The main peak of emission at 545 nm is attributed to 5D0→7F2 transition of the Tb3+ ion, and this process results in the enhancing green emission. Biological actrivity properties of the rare earth complex was well studied.


2007 ◽  
Vol 25 (2) ◽  
pp. 148-151 ◽  
Author(s):  
Yong Wang ◽  
Suling Zhao ◽  
Zheng Xu ◽  
Jinzhao Huang ◽  
Guangcai Yuan ◽  
...  

2006 ◽  
Vol 965 ◽  
Author(s):  
Zenken Kin ◽  
Yuichi Hino ◽  
Hirotake Kajii ◽  
Yasuchika Hasegawa ◽  
Tsuyoshi Kawai ◽  
...  

ABSTRACTWe investigated luminescent properties of rare-earth metal complexes and phosphor-rescent molecules doped in a conducting polymer. Electroluminescent (EL) properties in combination of red emissive europium complex of tris(di-benzoylmethane)-mono(4,7-diphenyl-phenanthroline) europium (III) (Eu(dbm)3phen) and blue phosphorescent molecule of bis[(4,6-difluoro-phenyl)-pyridinato-N,C2'] (picolinate) iridium (III) (FIrpic) doped in poly(N-vinyl-carbazole) (PVK) and a new rare-earth complex tris(hexafluoroacethylacetonato) (phenan-throline) samarium(III) [Sm(hfa)3(phen)2] have been investigated as an EL emitter. White EL has been obtained from mixed layer of Eu(dbm)3phen and FIrpic, and EL from Sm complex has been obtained. Energy transfer and the emission mechanisms have been discussed.


1998 ◽  
Vol 14 (04) ◽  
pp. 305-308
Author(s):  
Li Bin ◽  
◽  
Ma Dong-Ge ◽  
Zhang Hong-Jie ◽  
Zhao Xiao-Jiang ◽  
...  

1981 ◽  
Vol 23 (1-2) ◽  
pp. 175-190 ◽  
Author(s):  
J. Benoit ◽  
P. Benalloul ◽  
B. Blanzat

Author(s):  
Ping Wu ◽  
Qianli Ma ◽  
Wensheng Yu ◽  
Jinxian Wang ◽  
Gui-Xia Liu ◽  
...  

Here, we put forward a viewpoint that the energy transfer between different rare earth (RE) ions plays negative effect in RE ions doped white fluorescent materials if the native fluorescence...


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