Red- and white-emitting organic light-emitting diodes based on trimetallic dendritic europium (III) complex: Eu 3(DBM) 9(TMMB)
Document Type
Article
Publication Date
3-1-2012
Abstract
The photoluminescence (PL) and electroluminescence (EL) properties of a trimetallic dendritic europium (III) complex containing three metal cores as branching centers, tris(dibenzoylmethanato) (1,3,5-tris[2-(2′-pyridyl) benzimidazoly]methyl-benzene)-europium (III) (Eu 3(DBM) 9(TMMB)), have been investigated and reported. Red and white emissions have been acquired in the four EL devices of device A-D. Characteristic red emission peaking at 613 nm with four shoulder bands due to the 5D 0 → 7F j (j = 0-4) transitions of Eu 3(DBM) 9(TMMB) is observed in devices A-C. Device D with a simple non-doping device structure showed a white emission band. Also, the optical and the electrochemical properties of Eu 3(DBM) 9(TMMB) have been characterized to possess a better understanding on the intramolecular energy transfer process. It is concluded that dendritic structure with three DBM ligands as "absorption antennas" facilitates the energy absorption and transportation of the complex. © 2011 Elsevier Ltd. All rights reserved.
Publication Source (Journal or Book title)
Solid-State Electronics
First Page
67
Last Page
71
Recommended Citation
Chen, L., Wang, B., Zhang, L., Zhu, D., Li, P., Su, Z., & Li, B. (2012). Red- and white-emitting organic light-emitting diodes based on trimetallic dendritic europium (III) complex: Eu 3(DBM) 9(TMMB). Solid-State Electronics, 69, 67-71. https://doi.org/10.1016/j.sse.2011.12.005