| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1442765 | Synthetic Metals | 2009 | 4 Pages |
Abstract
Rare earth ternary complex of Eu3+ with 4,7-2NH2 Phenanthroline and HTTA was synthesized, and it contents and structures were postulated based on elemental analysis, FT-IR spectra and UV–vis spectra. Results show that the complex of Eu(III) emit strong red luminescence when excited by UV light. Eu(TTA)(2NH2-Phen)3 has the higher sensitized luminescent efficiency and longer lifetime. In device ITO/PVK/Eu(TTA)(2NH2-Phen)3/Al, Eu3+ may be excited by intramolecular energy transfer from ligands as observed by electroluminescence. The main emitting peak at 614 nm can be attributed to the transition of 5D0 → 7F2 of Eu3+ ion and this process results in the enhancement of red emission from electroluminescence device.
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Authors
Yuguang Lv, Yuehui Zhao, Zhiwei Yang, Cuijuan Liu, Hong Yan, Gang Li, Hong Liu, Jie Xie,